do not update gh pages on pr

Author: anthony-nhs

.github/workflows/cdk_release_code.yml

@@ -139,6 +139,7 @@ jobs:
           path: gh-pages
 
       - name: update release tag in github pages
+        if: ${{ inputs.DEPLOY_CHANGE == true }}
         run: |
           cd gh-pages
           NOW=$(date +'%Y-%m-%dT%H:%M:%S')