[DEVREL-144] Fix test workflow to always produce a unique change

Author: suever

.github/workflows/test-app-commit.yml

@@ -32,7 +32,7 @@ jobs:
           # Local commit to package the tree and push objects to GitHub.
           git config user.name "bot"
           git config user.email "bot@noreply"
-          echo "# Test commit — safe to delete" > .test-app-commit
+          echo "# Test commit $(date -u) — safe to delete" > .test-app-commit
           git add .test-app-commit
           git commit -m "test: verify GitHub App commit shows as Verified"
           git push