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

Author: renovate[bot]

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: json-yaml-validate
         uses: GrantBirki/[email protected]