use localhost for db

Author: Rahe

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
       run: php -v
 
     - name: Install WP Tests
-      run: bash bin/install-wp-tests.sh wordpress_test root root localhost ${{ matrix.wp }}
+      run: bash bin/install-wp-tests.sh wordpress_test root '' 127.0.0.1:3306 ${{ matrix.wp }}
 
     - name: phpunit tests
       run: phpunit