CSPL-4201 Update GitHub Actions workflow to add id-token permission

- Added 'id-token: write' permission to the build-test-push workflow for enhanced security and access control.

Author: kubabuczak

.github/workflows/build-test-push-workflow.yml

@@ -113,6 +113,7 @@ jobs:
     permissions:
       actions: read
       contents: read
+      id-token: write
       security-events: write
     runs-on: ubuntu-latest
     needs: build-operator-image