judge: add ws to dep

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.3.14",
+    "version": "2.3.15",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
@@ -15,6 +15,7 @@
         "p-queue": "^6.6.1",
         "shell-quote": "^1.7.2",
         "systeminformation": "5.3.3",
+        "ws": "^7.4.3",
         "yargs": "^16.2.0"
     },
     "peerDependencies": {
@@ -31,4 +32,4 @@
         "build": "tsc",
         "lint": "eslint . --ext ts --fix"
     }
-}
+}