Update lint.yml

Author: koppor

.github/workflows/lint.yml

@@ -13,7 +13,6 @@ jobs:
     steps:
       - name: Set up Git repository
         uses: actions/checkout@v4
-      - uses: gautamkrishnar/keepalive-workflow@v2
       - name: Lint
         uses: DavidAnson/markdownlint-cli2-action@v19
         with: