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

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
   "dependencies": {
     "@epic-web/cachified": "5.2.0",
     "@nestjs/common": "10.4.15",
-    "@nestjs/config": "3.3.0",
+    "@nestjs/config": "4.0.0",
     "@nestjs/core": "10.4.15",
     "@nestjs/jwt": "11.0.0",
     "@nestjs/mapped-types": "2.1.0",