Set debug mode

Author: ben221199

.github/workflows/php.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: vendor
           key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
@@ -31,4 +31,6 @@ jobs:
         run: composer install --prefer-dist --no-progress
 
       - name: Run test suite
+        env:
+          XDEBUG_MODE: coverage
         run: composer run-script test