[Icon update detected by Github Action]. Auto generated pull request. (#2310)

Co-authored-by: Material Design Service Account <[email protected]>

Author: github-actions[bot]

MaterialDesignThemes.Wpf/PackIconKind.cs

@@ -7133,6 +7133,7 @@ public enum PackIconKind
         PostItNoteAlertOutline=NoteAlertOutline,
         StickyNoteAlertOutline=NoteAlertOutline,
         Notebook,
+        Diary=Notebook,
         Journal=Notebook,
         Planner=Notebook,
         NotebookCheck,