[autofix] attempt to log actor string (grpc#35182)

.github/workflows/pr-auto-fix.yaml

@@ -50,6 +50,7 @@ jobs:
             // If you'd like not to run this code on your commits, add your github user id here:
             NO_AUTOFIX_USERS = ["copybara-service"]
             const { owner, repo } = context.repo
+            console.log("Actor: " + context.actor);
             if (NO_AUTOFIX_USERS.includes(context.actor)) {
               console.log('Cancelling');
               const run_id = "${{ github.run_id }}";