chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Node
         uses: actions/setup-node@v6
         with: