Allow check breaking changes from forks

Author: asmyasnikov

.github/workflows/breaking.yml

@@ -11,6 +11,8 @@ jobs:
       group: broken-changes-${{ github.ref }}
       cancel-in-progress: true
     runs-on: ubuntu-latest
+    permissions: 
+      pull-requests: write 
     steps:
       - name: Install Go
         uses: actions/setup-go@v3