chore: don't checkout the code when running the bot action

Author: bfabio

.github/workflows/bot.yml

@@ -5,7 +5,6 @@ jobs:
   bot:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
       - uses: publiccodeyml/bot@main
         with:
           username: yaml-9000