Bump actions/checkout from 6.0.2 to 7.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.2 to 7.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@de0fac2...9c091bb)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/lint.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
+    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
       with:
         fetch-depth: 0 # fetch everything
     - name: Set up Ruby

.github/workflows/test.yml

@@ -30,7 +30,7 @@ jobs:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
 
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
+    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # actions/checkout@v6 see https://github.com/actions/checkout/releases/tag/v6
     - name: Set up Ruby
       uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # ruby/setup-ruby@v1 see https://github.com/ruby/setup-ruby/tree/v1
       with: