fix(deps): update dependency koa-router to v8

Author: renovate-bot

package-lock.json

@@ -39,7 +39,7 @@
     "koa": "2.11.0",
     "koa-bodyparser": "4.2.1",
     "koa-pino-logger": "2.1.3",
-    "koa-router": "7.4.0",
+    "koa-router": "8.0.6",
     "koa-session": "5.12.3",
     "lodash": "4.17.15",
     "memoizee": "0.4.14",