switch phosphor to lumino dependencies

packages/celltags/src/addwidget.ts

@@ -1,4 +1,4 @@
-import { Widget } from '@phosphor/widgets';
+import { Widget } from '@lumino/widgets';
 
 import { defaultIconRegistry } from '@jupyterlab/ui-components';
 

packages/celltags/src/tool.ts

@@ -1,4 +1,4 @@
-import { PanelLayout } from '@phosphor/widgets';
+import { PanelLayout } from '@lumino/widgets';
 
 import { NotebookTools, INotebookTracker } from '@jupyterlab/notebook';
 

packages/celltags/src/widget.ts

@@ -1,4 +1,4 @@
-import { Widget } from '@phosphor/widgets';
+import { Widget } from '@lumino/widgets';
 
 import { defaultIconRegistry } from '@jupyterlab/ui-components';
 

packages/celltags/style/index.css

@@ -4,7 +4,7 @@
 |----------------------------------------------------------------------------*/
 
 /* This file was auto-generated by ensurePackage() in @jupyterlab/buildutils */
-@import url('~@phosphor/widgets/style/index.css');
+@import url('~@lumino/widgets/style/index.css');
 @import url('~@jupyterlab/ui-components/style/index.css');
 @import url('~@jupyterlab/application/style/index.css');
 @import url('~@jupyterlab/cells/style/index.css');