Merge pull request #31 from open-contracting-extensions/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Author: jpmckinney

.github/workflows/lint.yml

@@ -7,7 +7,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: 3.8