Changelog entries for MR 21524 and 21607

changelogs/unreleased/39465-39469-issues-solutions.yml

+---
+title: UI improvements in the views for new project from template and the user groups
+  and snippets
+merge_request: 21524
+author: Hector Bustillos
+type: changed

changelogs/unreleased/42158-stage-dropdown-lists-fix.yml

+---
+title: Stage dropdown lists style corrections
+merge_request: 21607
+author: Hector Bustillos
+type: fixed