Update dependency koa-router to v9.4.0

Author: renovate-bot

packages/web-server/package.json

@@ -146,7 +146,7 @@
     "koa-helmet": "5.2.0",
     "koa-i18n": "2.1.0",
     "koa-locale": "1.3.0",
-    "koa-router": "9.1.0",
+    "koa-router": "9.4.0",
     "koa-send": "5.0.0",
     "koa-session": "6.0.0",
     "koa2-ratelimit": "0.9.0",