Update Scrutinizer config.

.scrutinizer.yml

@@ -1,25 +1,36 @@
 build:
+  nodes:
+    analysis:
+      tests:
+        override:
+          - php-scrutinizer-run
+
+    coverage:
+      tests:
+        override:
+          - command: ./vendor/bin/phpunit --coverage-clover build/logs/clover.xml
+            coverage:
+              file: build/logs/clover.xml
+              format: clover
+
   environment:
     php: 7.3.0
     variables:
       WP_TESTS_DB_NAME: 'wp_phpunit_tests'
       WP_TESTS_DB_USER: 'root'
       WP_TESTS_DB_PASS: ''
-      WP_TESTS_DB_HOST: 'localhost'
-  project_setup:
-    before:
-      - mysql -e "CREATE DATABASE wp_phpunit_tests"
+      WP_TESTS_DB_HOST: '127.0.0.1'
+
+  services:
+    mysql: 5.7
+
   dependencies:
     override:
       - composer install --ignore-platform-reqs --no-interaction
-  nodes:
-    coverage:
-      tests:
-        override:
-          - command: ./vendor/bin/phpunit
-            coverage:
-              file: build/logs/clover.xml
-              format: clover
+
+  project_setup:
+    before:
+      - mysql -e "CREATE DATABASE wp_phpunit_tests"
 
 filter:
   excluded_paths: