Use drupal/core-dev

Author: webflo

Diff for: composer.json

@@ -29,7 +29,7 @@
         "zaporylie/composer-drupal-optimizations": "^1.0"
     },
     "require-dev": {
-        "drupal/dev-dependencies": "^8.8.0"
+        "drupal/core-dev": "^8.8.0"
     },
     "conflict": {
         "drupal/drupal": "*"