Merge pull request #174 from mocks-server/renovate/serve-12.x

chore(deps): update dependency serve to v12

Author: javierbrea

test-e2e/app/package-lock.json

@@ -7,6 +7,6 @@
     "serve": "serve -l 3000"
   },
   "devDependencies": {
-    "serve": "11.3.2"
+    "serve": "12.0.0"
   }
 }