.github: opa with v0 compatibility

Author: mrueg

.github/workflows/pull_request.yaml

@@ -102,7 +102,7 @@ jobs:
           version: latest
 
       - name: opa check strict
-        run: opa check --strict --ignore "*.yaml" examples
+        run: opa check --v0-compatible --strict --ignore "*.yaml" examples
 
       - name: setup regal
         uses: styrainc/[email protected]