Bump actions/cache from 3 to 4

Bumps [actions/cache](https://github.com/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/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -20,15 +20,15 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Cache PHP dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: '**/vendor'
           key: ${{ runner.os }}-vendor-cache-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-vendor-cache-
 
       - name: Cache Composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.composer/cache/files
           key: composer-${{ runner.os }}-php-${{ matrix.php }}-${{ hashFiles('composer.json') }}