chore(deps): bump actions/checkout from 4 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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/ci.yml

@@ -12,7 +12,7 @@ jobs:
       run:
         working-directory: .
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install dependencies
         run: sudo apt-get update && sudo apt-get install -y build-essential cppcheck clang-format
       - name: Run linter

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
           config-file: release-please-config.json
           manifest-file: .release-please-manifest.json
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         if: ${{ steps.release.outputs.release_created }}
 
       - uses: actions/setup-python@v6