try evaluate RELEASE_BRANCH_NAME at runtime

.github/workflows/CI.yaml

@@ -11,7 +11,6 @@ env:
   CODEARTIFACT_USERNAME: ${{ secrets.CODEARTIFACT_USERNAME }}
   ECR_NEO4J_DOCKER_URL: ${{ secrets.ECR_NEO4J_DOCKER_URL }}
   BRANCH_NAME: ${{ github.event.pull_request.base.ref }}
-  RELEASE_BRANCH_NAME: $BRANCH_NAME =~ ^\d{4}\.(0[1-9]|1[0-2])\.\d+$ || $BRANCH_NAME =~ ^5.[0-9]+$
 
 jobs:
   code-ql:
@@ -25,6 +24,13 @@ jobs:
       matrix:
         language: [ 'java', 'javascript' ]
     steps:
+      - name: Set RELEASE_BRANCH_NAME based on branch name
+        run: |
+          if [[ "$BRANCH_NAME" =~ [0-9]{4}\.(0[1-9]|1[0-2]) || "$BRANCH_NAME" =~ ^5\.[0-9]+$ ]]; then
+            echo "RELEASE_BRANCH_NAME=true" >> $GITHUB_ENV
+          else
+            echo "RELEASE_BRANCH_NAME=false" >> $GITHUB_ENV
+          fi
       - name: Set CODEARTIFACT_DOWNLOAD_URL based on BRANCH_NAME
         run: |
           if [[ $RELEASE_BRANCH_NAME ]]; then
@@ -104,6 +110,13 @@ jobs:
         project: [ 'extended', 'extended-it' ]
     runs-on: ubuntu-latest
     steps:
+      - name: Set RELEASE_BRANCH_NAME based on branch name
+        run: |
+          if [[ "$BRANCH_NAME" =~ [0-9]{4}\.(0[1-9]|1[0-2]) || "$BRANCH_NAME" =~ ^5\.[0-9]+$ ]]; then
+            echo "RELEASE_BRANCH_NAME=true" >> $GITHUB_ENV
+          else
+            echo "RELEASE_BRANCH_NAME=false" >> $GITHUB_ENV
+          fi
       - name: Configure AWS CLI
         uses: aws-actions/configure-aws-credentials@v2
         with: