WX-1550 Don't pointlessly continue running integration tests (#7400)

Author: jgainerdewar

.github/workflows/integration_tests.yml

@@ -16,6 +16,12 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  # Don't run this workflow concurrently on the same branch
+  group: ${{ github.workflow }}-${{ github.ref }}
+  # For PRs, don't wait for completion of existing runs, cancel them instead
+  cancel-in-progress: ${{ github.ref != 'develop' }}
+
 jobs:
   integration-tests:
     strategy: