Replace auto-merge action with gh command

Author: michelroegl-brunner

.github/workflows/publish_release.yml

@@ -67,13 +67,11 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
 
-      - name: Auto-merge PR
-        uses: peter-evans/enable-pull-request-automerge@v2
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          pull-request-number: ${{ steps.pr.outputs.pr_number }}
-          merge-method: squash
-
+      - name: Merge PR
+        run: |
+          gh pr merge ${{ steps.pr.outputs.pr_number }} --squash --admin
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Wait for PR merge
         uses: actions/github-script@v7