Bump actions/checkout from 3.0.0 to 4.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.0.0...v4.0.0)

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

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

.github/workflows/build.yml

@@ -28,7 +28,7 @@ jobs:
         run: git config --global core.autocrlf false
 
       - name: Checkout
-        uses: actions/checkout@v3.0.0
+        uses: actions/checkout@v4.0.0
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2

.github/workflows/mutation.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3.0.0
+        uses: actions/checkout@v4.0.0
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2

.github/workflows/static.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3.0.0
+        uses: actions/checkout@v4.0.0
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2