fix(deps): update dependency @nestjs/config to v4 (#411)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@fastify/helmet": "^13.0.0",
     "@nestjs/common": "^10.0.0",
-    "@nestjs/config": "^3.0.0",
+    "@nestjs/config": "^4.0.0",
     "@nestjs/core": "^10.0.0",
     "@nestjs/graphql": "^12.0.0",
     "@nestjs/jwt": "^10.0.0",