CCM-17846: Sonar PR Decoration Fix

Author: jamesthompson26-nhs

.github/workflows/cicd-1-pull-request.yaml

@@ -11,6 +11,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   metadata:
     name: "Set CI/CD metadata"