Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/pre-commit.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v6
         with:

.github/workflows/use-action.yaml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       # ⚠️ When using credentials_json, you must check out the code first!!
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           # For pull_request_target, checkout the PR head to test the PR's code
           ref: ${{ github.event.pull_request.head.sha || github.sha }}