Bump the all group with 3 updates

Bumps the all group with 3 updates: [actions/checkout](https://github.com/actions/checkout), [shivammathur/setup-php](https://github.com/shivammathur/setup-php) and [actions/cache](https://github.com/actions/cache).


Updates `actions/checkout` from 3 to 4
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

Updates `shivammathur/setup-php` from 2.24.0 to 2.31.1
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.24.0...2.31.1)

Updates `actions/cache` from 3 to 4
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all
- dependency-name: shivammathur/setup-php
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all
...

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

.github/workflows/main.yml

@@ -14,16 +14,16 @@ jobs:
     name: PHP ${{ matrix.php }}
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.24.0
+        uses: shivammathur/setup-php@2.31.1
         with:
           php-version: ${{ matrix.php }}
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: "~/.cache/composer"
           key: "php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}"