Bump actions/checkout from 3 to 4 in /.github/workflows#76

wei18 merged 2 commits intomainwei18/github-rest-api-swift-openapi:mainfrom

dependabot/github_actions/dot-github/workflows/actions/checkout-4wei18/github-rest-api-swift-openapi:dependabot/github_actions/dot-github/workflows/actions/checkout-4Copy head branch name to clipboard