chore: experiment with sync-version

.github/workflows/sync-version.yml

@@ -5,14 +5,14 @@ name: sync versions
 
 on:
     pull_request:
-        types: [labeled]
 
 permissions:
     contents: write
     pull-requests: write
 
 jobs:
     sync-versions:
+        if: "${{ github.event.label.name == 'autorelease: pending' }}"
         runs-on: ubuntu-latest
         steps:
             - uses: actions/checkout@v3