ci - non-master prs can modify both cdk and connector (#67108)

.github/workflows/jvm-connector-pr-structure.yml

@@ -7,6 +7,7 @@ jobs:
   enforce-pr-structure:
     name: Enforce PR structure
     runs-on: ubuntu-24.04
+    if: github.base_ref == 'master' && github.repository == 'airbytehq/airbyte'
     steps:
       - name: Check for changes in bulk CDK
         uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47