Also update number in release job

Author: TimvdLippe

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
     needs: [build] # build job must pass before we can release
 
     if: github.event_name == 'push'
-      && github.ref == 'refs/heads/release/1.x'
+      && github.ref == 'refs/heads/release/2.x'
       && github.repository == 'mockito/mockito-scala'
       && !contains(toJSON(github.event.commits.*.message), '[skip release]')