Attempt at fixing CI

Author: Pierstoval

.github/workflows/php.yml

@@ -43,7 +43,7 @@ jobs:
             - id: composer-cache
               run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
-            - uses: actions/cache@v1
+            - uses: actions/cache@v4
               with:
                   path: ${{ steps.composer-cache.outputs.dir }}
                   key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}