Adding concurrency to tests

Author: woody-apple

.github/workflows/tests.yaml

@@ -19,6 +19,10 @@ on:
     pull_request:
     workflow_dispatch:
 
+concurrency:
+    group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.event.number || github.sha }}
+    cancel-in-progress: true
+
 jobs:
     test_suites_linux:
         name: Test Suites - Linux