fix(deps): update dependency handlebars to v4.4.3

Author: renovate-bot

sample/17-mvc-fastify/package-lock.json

@@ -13,7 +13,7 @@
     "@nestjs/common": "6.8.2",
     "@nestjs/core": "6.8.2",
     "@nestjs/platform-fastify": "6.8.2",
-    "handlebars": "4.4.2",
+    "handlebars": "4.4.3",
     "point-of-view": "3.5.2",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.3",