Bump actions/checkout from 3.0.0 to 3.0.1 (#94)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.0.0 to 3.0.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.0.0...v3.0.1)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
         ruby: [jruby, truffleruby, 2.5, 2.6, 2.7, '3.0', 3.1, head]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/[email protected].0
+      - uses: actions/[email protected].1
 
       # Conditionally configure bundler via environment variables as advised
       #   * https://github.com/ruby/setup-ruby#bundle-config