add PR number to concurrency (#1981)

* Add PR number to Semantic PR Title Check concurrency to avoid unintended cancellation.

Author: kratsg

.github/workflows/semantic-pr-check.yml

@@ -8,7 +8,7 @@ on:
       - synchronize
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event.number }}
   cancel-in-progress: true
 
 jobs: