ci: staging deploy PR works on dispatch, push to main

Author: SgtPooki

.github/workflows/deploy.yml

@@ -15,7 +15,7 @@ permissions:
 jobs:
   # from https://github.com/peter-evans/create-pull-request/blob/main/docs/examples.md#keep-a-branch-up-to-date-with-another
   deploy-staging:
-    if: github.ref == 'refs/heads/main' && startsWith(github.ref, 'refs/tags/')
+    if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/'))
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4