(chore) Tweak pre-release job skip logic (#735)

This PR tweaks the custom logic in the `pre-release` job of the CI workflow to accurately represent the signature of a release commit. This is so that GitHub Actions knows not to run the `pre-release` job for commits that cut releases.

.github/workflows/ci.yml

@@ -54,9 +54,9 @@ jobs:
   pre_release:
     runs-on: ubuntu-latest
     needs: build
-
+    
     if: ${{ (github.event.head_commit == null || 
-          !startsWith(github.event.head_commit.message, '(release)')) && 
+          !startsWith(github.event.head_commit.message, '(chore) Release v')) && 
           (github.event_name == 'push' || github.event_name == 'workflow_dispatch') }}
 
     steps: