CI: Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/behat.yml

@@ -14,7 +14,7 @@ jobs:
                 php-versions: [ '8.2', '8.3' ]
         steps:
             -   name: Checkout
-                uses: actions/checkout@v6
+                uses: actions/checkout@v7
 
             -   name: Setup apache
                 run: |

.github/workflows/format_code.yml

@@ -17,7 +17,7 @@ jobs:
                 php-versions: ['8.2']
         steps:
             - name: Checkout
-              uses: actions/checkout@v6
+              uses: actions/checkout@v7
 
             - name: Setup PHP, with composer and extensions
               uses: shivammathur/setup-php@v2

.github/workflows/php_analysis.yml

@@ -14,7 +14,7 @@ jobs:
                 php-versions: ['8.2']
         steps:
             - name: Checkout
-              uses: actions/checkout@v6
+              uses: actions/checkout@v7
 
             - name: Setup PHP, with composer and extensions
               uses: shivammathur/setup-php@v2

.github/workflows/phpunit.yml

@@ -17,7 +17,7 @@ jobs:
                 php-versions: ['8.2']
         steps:
             - name: Checkout
-              uses: actions/checkout@v6
+              uses: actions/checkout@v7
 
             - name: Setup node
               run: |