Update PR action to use peter-evans version (#50237)

Author: gewarren

.github/workflows/cleanrepo-orphaned-articles.yml

@@ -35,7 +35,7 @@ jobs:
 
       # Create the PR for the work done by the "clean repo" tool
       - name: create-pull-request
-        uses: dotnet/actions-create-pull-request@v4
+        uses: peter-evans/actions-create-pull-request@v7
         with:
           branch: cleanrepo-orphaned-articles
           title: "Monthly chores: Delete orphaned articles"