修复一处类型错误

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.12.25",
+    "version": "2.12.26",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
@@ -25,13 +25,13 @@
         "lodash": "^4.17.20",
         "lru-cache": "^6.0.0",
         "moment-timezone": "^0.5.31",
-        "mongodb": "^3.6.0",
+        "mongodb": "^3.6.1",
         "nodemailer": "^6.4.10",
         "ps-list": "^7.2.0",
         "serialize-javascript": "^4.0.0",
         "sockjs": "^0.3.20",
-        "superagent": "^6.0.0",
-        "systeminformation": "^4.26.10",
+        "superagent": "^6.1.0",
+        "systeminformation": "^4.27.3",
         "yargs": "^15.4.1"
     },
     "devDependencies": {
@@ -42,9 +42,9 @@
         "@types/koa-morgan": "^1.0.4",
         "@types/koa-router": "^7.4.1",
         "@types/koa-static-cache": "^5.1.0",
-        "@types/lodash": "^4.14.158",
+        "@types/lodash": "^4.14.161",
         "@types/lru-cache": "^5.1.0",
-        "@types/mongodb": "^3.5.26",
+        "@types/mongodb": "^3.5.27",
         "@types/nodemailer": "^6.4.0",
         "@types/serialize-javascript": "^4.0.0",
         "@types/sockjs": "^0.3.32",