Merge pull request #6 from OvertureMaps/dependabot/github_actions/actions/checkout-6

[CHORE](deps)(deps): Bump actions/checkout from 4 to 6

Author: lowlydba

.github/workflows/staging_deploy.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1