Bump actions/checkout from 6 to 7 in the dependencies group (#148)

Bumps the dependencies group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `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
  dependency-group: dependencies
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -32,11 +32,11 @@ jobs:
     container: swift:noble
     steps: 
       - name: Check out LeafKit
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           path: leaf-kit
       - name: Check out Leaf provider
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           repository: vapor/leaf
           path: leaf