Bump koa-router from 7.4.0 to 8.0.7

Bumps [koa-router](https://github.com/koajs/koa-router) from 7.4.0 to 8.0.7.
- [Release notes](https://github.com/koajs/koa-router/releases)
- [Changelog](https://github.com/koajs/router/blob/master/history.md)
- [Commits](koajs/router@v7.4.0...v8.0.7)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -32,7 +32,7 @@
     "ioredis": "^4.14.1",
     "iterable-ndjson": "^1.1.0",
     "koa": "^2.11.0",
-    "koa-router": "^7.4.0",
+    "koa-router": "^8.0.7",
     "koa-send": "^5.0.0",
     "koa-static": "^5.0.0",
     "ndjson": "^1.5.0",