fix: add "@types/mongodb" to dependencies, because of exposing a mongodb type

fixes #558

Author: hasezoey

packages/mongodb-memory-server-core/package.json

@@ -34,14 +34,14 @@
     "@types/debug": "^4.1.7",
     "@types/find-cache-dir": "^3.2.1",
     "@types/mkdirp": "^1.0.2",
-    "@types/mongodb": "^3.6.20",
     "@types/semver": "^7.3.8",
     "@types/tar-stream": "^2.1.0",
     "@types/uuid": "^8.0.0",
     "@types/yauzl": "^2.9.1",
     "rimraf": "^3.0.2"
   },
   "dependencies": {
+    "@types/mongodb": "^3.6.20",
     "@types/tmp": "^0.2.0",
     "async-mutex": "^0.3.2",
     "camelcase": "^6.1.0",