Automated Changelog Entry for 3.4.0rc0 on 3.4.x (#12483)

* Automated Changelog Entry for 3.4.0rc0 on 3.4.x

* Update CHANGELOG.md

Co-authored-by: GitHub Action <41898282+github-actions[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -12,39 +12,14 @@ github_url: 'https://github.com/jupyterlab/jupyterlab/blob/3.4.x/CHANGELOG.md'
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
-## 3.4.0b0
+## 3.4.0rc0
 
-([Full Changelog](https://github.com/jupyterlab/jupyterlab/compare/v3.4.0a0...77a0af36bbf615e0f5227cba204f3663ca7de698))
+([Full Changelog](https://github.com/jupyterlab/jupyterlab/compare/v3.3.4...c394aa25d1845144ee7ebdce611ff12f8d962bb8))
 
 ### Enhancements made
 
 - Display default value in setting editor for changed values [#12468](https://github.com/jupyterlab/jupyterlab/pull/12468) ([@echarles](https://github.com/echarles))
 - Uses dark theme for Vega when JupyterLab theme is dark [#12411](https://github.com/jupyterlab/jupyterlab/pull/12411) ([@jweill-aws](https://github.com/jweill-aws))
-
-### Bugs fixed
-
-- Check if process is declared before optional chaining in makeSettings [#12472](https://github.com/jupyterlab/jupyterlab/pull/12472) ([@fcollonval](https://github.com/fcollonval))
-- Signal should only export ISignal publicly [#12471](https://github.com/jupyterlab/jupyterlab/pull/12471) ([@fcollonval](https://github.com/fcollonval))
-- Move cell toolbar below search document widget [#12467](https://github.com/jupyterlab/jupyterlab/pull/12467) ([@fcollonval](https://github.com/fcollonval))
-
-### Maintenance and upkeep improvements
-
-- Fix update snapshot for 3.4.x [#12462](https://github.com/jupyterlab/jupyterlab/pull/12462) ([@fcollonval](https://github.com/fcollonval))
-
-### Contributors to this release
-
-([GitHub contributors page for this release](https://github.com/jupyterlab/jupyterlab/graphs/contributors?from=2022-04-21&to=2022-04-26&type=c))
-
-[@fcollonval](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Afcollonval+updated%3A2022-04-21..2022-04-26&type=Issues) | [@gabalafou](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Agabalafou+updated%3A2022-04-21..2022-04-26&type=Issues) | [@github-actions](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Agithub-actions+updated%3A2022-04-21..2022-04-26&type=Issues) | [@jtpio](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajtpio+updated%3A2022-04-21..2022-04-26&type=Issues) | [@jupyterlab-probot](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajupyterlab-probot+updated%3A2022-04-21..2022-04-26&type=Issues) | [@krassowski](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Akrassowski+updated%3A2022-04-21..2022-04-26&type=Issues) | [@meeseeksdev](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ameeseeksdev+updated%3A2022-04-21..2022-04-26&type=Issues) | [@meeseeksmachine](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ameeseeksmachine+updated%3A2022-04-21..2022-04-26&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Awelcome+updated%3A2022-04-21..2022-04-26&type=Issues)
-
-<!-- <END NEW CHANGELOG ENTRY> -->
-
-## 3.4.0a0
-
-([Full Changelog](https://github.com/jupyterlab/jupyterlab/compare/v3.3.4...0d166ef26bc505950abd65ee4e220d11eb197c1a))
-
-### Enhancements made
-
 - Creates cell-toolbar, cell-toolbar-extension packages and populates toolbar [#12028](https://github.com/jupyterlab/jupyterlab/pull/12028) ([@jweill-aws](https://github.com/jweill-aws))
 - Customize the file browser toolbar via the settings [#12441](https://github.com/jupyterlab/jupyterlab/pull/12441) ([@fcollonval](https://github.com/fcollonval))
 - Wait until file browser commands are ready before activating file browser widget [#12435](https://github.com/jupyterlab/jupyterlab/pull/12435) ([@fcollonval](https://github.com/fcollonval))
@@ -61,21 +36,34 @@ github_url: 'https://github.com/jupyterlab/jupyterlab/blob/3.4.x/CHANGELOG.md'
 
 ### Bugs fixed
 
+- Check if process is declared before optional chaining in makeSettings [#12472](https://github.com/jupyterlab/jupyterlab/pull/12472) ([@fcollonval](https://github.com/fcollonval))
+- Signal should only export ISignal publicly [#12471](https://github.com/jupyterlab/jupyterlab/pull/12471) ([@fcollonval](https://github.com/fcollonval))
+- Move cell toolbar below search document widget [#12467](https://github.com/jupyterlab/jupyterlab/pull/12467) ([@fcollonval](https://github.com/fcollonval))
 - Use css variable for font size. [#12255](https://github.com/jupyterlab/jupyterlab/pull/12255) ([@Carreau](https://github.com/Carreau))
 
 ### Maintenance and upkeep improvements
 
+- Only show duplicate LabIcon warning in debug mode [#12480](https://github.com/jupyterlab/jupyterlab/pull/12480) ([@ajbozarth](https://github.com/ajbozarth))
+- Update copyright date to 2022 in the about dialog [#12474](https://github.com/jupyterlab/jupyterlab/pull/12474) ([@jtpio](https://github.com/jtpio))
+- Fix update snapshot for 3.4.x [#12462](https://github.com/jupyterlab/jupyterlab/pull/12462) ([@fcollonval](https://github.com/fcollonval))
 - Update benchmark snapshots [#12451](https://github.com/jupyterlab/jupyterlab/pull/12451) ([@fcollonval](https://github.com/fcollonval))
 
+### Documentation improvements
+
+- Creates cell-toolbar, cell-toolbar-extension packages and populates toolbar [#12028](https://github.com/jupyterlab/jupyterlab/pull/12028) ([@jweill-aws](https://github.com/jweill-aws))
+- Customize the file browser toolbar via the settings [#12441](https://github.com/jupyterlab/jupyterlab/pull/12441) ([@fcollonval](https://github.com/fcollonval))
+
 ### Deprecated features
 
 - Deprecate FileEditorCodeWrapper [#12381](https://github.com/jupyterlab/jupyterlab/pull/12381) ([@hbcarlos](https://github.com/hbcarlos))
 
 ### Contributors to this release
 
-([GitHub contributors page for this release](https://github.com/jupyterlab/jupyterlab/graphs/contributors?from=2022-04-15&to=2022-04-21&type=c))
+([GitHub contributors page for this release](https://github.com/jupyterlab/jupyterlab/graphs/contributors?from=2022-04-15&to=2022-04-28&type=c))
 
-[@bollwyvl](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Abollwyvl+updated%3A2022-04-15..2022-04-21&type=Issues) | [@davidbrochart](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Adavidbrochart+updated%3A2022-04-15..2022-04-21&type=Issues) | [@echarles](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Aecharles+updated%3A2022-04-15..2022-04-21&type=Issues) | [@fcollonval](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Afcollonval+updated%3A2022-04-15..2022-04-21&type=Issues) | [@github-actions](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Agithub-actions+updated%3A2022-04-15..2022-04-21&type=Issues) | [@jtpio](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajtpio+updated%3A2022-04-15..2022-04-21&type=Issues) | [@jupyterlab-probot](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajupyterlab-probot+updated%3A2022-04-15..2022-04-21&type=Issues) | [@jweill-aws](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajweill-aws+updated%3A2022-04-15..2022-04-21&type=Issues) | [@meeseeksmachine](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ameeseeksmachine+updated%3A2022-04-15..2022-04-21&type=Issues)
+[@bollwyvl](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Abollwyvl+updated%3A2022-04-15..2022-04-28&type=Issues) | [@davidbrochart](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Adavidbrochart+updated%3A2022-04-15..2022-04-28&type=Issues) | [@echarles](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Aecharles+updated%3A2022-04-15..2022-04-28&type=Issues) | [@fcollonval](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Afcollonval+updated%3A2022-04-15..2022-04-28&type=Issues) | [@gabalafou](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Agabalafou+updated%3A2022-04-15..2022-04-28&type=Issues) | [@github-actions](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Agithub-actions+updated%3A2022-04-15..2022-04-28&type=Issues) | [@jtpio](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajtpio+updated%3A2022-04-15..2022-04-28&type=Issues) | [@jupyterlab-probot](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajupyterlab-probot+updated%3A2022-04-15..2022-04-28&type=Issues) | [@jweill-aws](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ajweill-aws+updated%3A2022-04-15..2022-04-28&type=Issues) | [@krassowski](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Akrassowski+updated%3A2022-04-15..2022-04-28&type=Issues) | [@meeseeksdev](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ameeseeksdev+updated%3A2022-04-15..2022-04-28&type=Issues) | [@meeseeksmachine](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Ameeseeksmachine+updated%3A2022-04-15..2022-04-28&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyterlab+involves%3Awelcome+updated%3A2022-04-15..2022-04-28&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
 
 ## v3.3