core: update to mongodb5 (#514)

packages/migrate/package.json

@@ -6,13 +6,12 @@
     "author": "undefined <i@undefined.moe>",
     "license": "AGPL-3.0-or-later",
     "devDependencies": {
-        "@types/mongodb": "^3.6.20",
         "@types/mysql": "^2.15.21",
         "@types/turndown": "^5.0.1"
     },
     "dependencies": {
         "mariadb": "^3.1.0",
-        "mongodb": "^3.7.3",
+        "mongodb": "^5.1.0",
         "mysql": "^2.18.1",
         "turndown": "^7.1.1"
     }