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] <support@github.com>

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           ini-values: xdebug.max_nesting_level=3000
 
       - name: Load Composer package cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: "~/.cache/composer"
           key: "php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}"
@@ -53,7 +53,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Load Composer package cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: "~/.cache/composer"
           key: "php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}"