ci: Trigger clio pipeline on PRs targeting release branches (#6080)

This change triggers the Clio pipeline on PRs that target any of the `release*` branches (in addition to the `master` branch), as opposed to only the `release` branch.

Author: bthomee

.github/workflows/on-pr.yml

@@ -115,7 +115,7 @@ jobs:
     needs:
       - should-run
       - build-test
-    if: ${{ needs.should-run.outputs.go == 'true' && contains(fromJSON('["release", "master"]'), github.ref_name) }}
+    if: ${{ needs.should-run.outputs.go == 'true' && (startsWith(github.base_ref, 'release') || github.base_ref == 'master') }}
     uses: ./.github/workflows/reusable-notify-clio.yml
     secrets:
       clio_notify_token: ${{ secrets.CLIO_NOTIFY_TOKEN }}