fix(deps): update dependency fastify to v4.20.0

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| npm        | fastify | 4.19.2 | 4.20.0 |

Author: renovate[bot]

package-lock.json

@@ -38,7 +38,7 @@
     "@fastify/helmet": "10.1.1",
     "@fastify/swagger": "8.8.0",
     "@hapi/boom": "10.0.1",
-    "fastify": "4.19.2",
+    "fastify": "4.20.0",
     "fastify-healthcheck": "4.4.0",
     "lodash": "4.17.21",
     "mongoose": "5.13.20",