Control deployment pipeline concurrency

Ensure:
- 2 deployments don't run at the same time on the same environment
- deploy and destroy a review app don't run at the same time

Author: saliceti

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

@@ -12,6 +12,8 @@ jobs:
       id-token: write
     runs-on: ubuntu-latest
     environment: review
+    concurrency: deploy-review-${{ github.ref }}
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4

.github/workflows/stage-4-deploy.yaml

@@ -25,6 +25,7 @@ jobs:
         environment: ${{ fromJson(inputs.environments) }}
       max-parallel: 1
     environment: ${{ matrix.environment }}
+    concurrency: deploy-${{ matrix.environment }}-${{ github.ref }}
 
     steps:
       - name: Checkout code