ci: let a push to studio finish instead of cancelling the run before it

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ permissions:
 
 concurrency:
   group: ci-${{ github.ref }}
-  cancel-in-progress: true
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 jobs:
   # Cheap path gate for pull requests. PRs confined to docs/release-notes

.github/workflows/studio.yml

@@ -16,7 +16,7 @@ permissions:
 
 concurrency:
   group: studio-${{ github.ref }}
-  cancel-in-progress: true
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 jobs:
   frontend: