Fix workflow concurrency

Author: dolfinus

.github/workflows/codeql-analysis.yml

@@ -11,7 +11,7 @@ on:
   - cron: 45 13 * * 6
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/test.yml

@@ -9,7 +9,7 @@ on:
     - master
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
 jobs: