Merge pull request #7 from per1234/sync-labels-fix

Fix bugs in dry run determination code for "Sync Labels" workflow

Author: per1234

.github/workflows/sync-labels.yml

@@ -91,8 +91,14 @@ jobs:
       - name: Determine whether to dry run
         id: dry-run
         if: >
-          github.event == 'pull_request' ||
-          github.ref != format('refs/heads/{0}', github.event.repository.default_branch)
+          github.event_name == 'pull_request' ||
+          (
+            (
+              github.event_name == 'push' ||
+              github.event_name == 'workflow_dispatch'
+            ) &&
+            github.ref != format('refs/heads/{0}', github.event.repository.default_branch)
+          )
         run: |
           # Use of this flag in the github-label-sync command will cause it to only check the validity of the
           # configuration.