Bump actions/checkout from 4.1.7 to 4.2.2 (#26)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.7 to 4.2.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.7...v4.2.2)

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

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

.github/workflows/run-tests.yml

@@ -14,7 +14,7 @@ jobs:
                 php: [8.1, 8.2]
                 dependency-version: [highest, lowest]
         steps:
-            - uses: actions/checkout@v4.1.7
+            - uses: actions/checkout@v4.2.2
 
             - name: Configure PHP
               uses: shivammathur/setup-php@v2
@@ -46,7 +46,7 @@ jobs:
         name: Run PHPStan analysis
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v4.1.7
+            - uses: actions/checkout@v4.2.2
 
             - name: Configure PHP
               uses: shivammathur/setup-php@v2