Bump actions/checkout from 4.2.2 to 5.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.2 to 5.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.2.2...v5.0.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
     name: phpunit (${{ matrix.php-versions }}-${{ matrix.dependencies }})
 
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@v5.0.0
 
       - uses: shivammathur/[email protected]
         with:
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@v5.0.0
       - uses: shivammathur/[email protected]
         with:
           php-version: 7.4
@@ -75,7 +75,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@v5.0.0
       - uses: shivammathur/[email protected]
         with:
           php-version: 7.4