fix(deps): update dependency fast-json-stringify to v1.15.0

Author: renovate-bot

package-lock.json

@@ -49,7 +49,7 @@
     "cors": "2.8.5",
     "engine.io-client": "3.3.2",
     "express": "4.16.4",
-    "fast-json-stringify": "1.14.0",
+    "fast-json-stringify": "1.15.0",
     "fast-safe-stringify": "2.0.6",
     "fastify": "2.2.0",
     "fastify-cors": "2.1.2",