Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - uses: ruby/setup-ruby@d45b1a4e94b71acab930e56e79c6aa188764e7f9 # pin@v1.316.0
         with:

.github/workflows/lint.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - uses: ruby/setup-ruby@d45b1a4e94b71acab930e56e79c6aa188764e7f9 # pin@v1.316.0
         with:

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - uses: ruby/setup-ruby@d45b1a4e94b71acab930e56e79c6aa188764e7f9 # pin@v1.316.0
         with:

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
         ruby_version: ["3.3", "3.4", "4.0"]
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Update .ruby-version with matrix value
         run: echo "${{ matrix.ruby_version }}" >| .ruby-version