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

@@ -50,7 +50,7 @@ jobs:
         run: echo "cache-dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Setup cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.setup-composer.outputs.cache-dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock', '**/composer.json') }}
@@ -167,7 +167,7 @@ jobs:
         run: echo "cache-dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Setup cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.setup-composer.outputs.cache-dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock', '**/composer.json') }}
@@ -256,7 +256,7 @@ jobs:
         run: echo "cache-dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Setup cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.setup-composer.outputs.cache-dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock', '**/composer.json') }}