build(deps): bump koa from 2.16.1 to 3.0.0

Bumps [koa](https://github.com/koajs/koa) from 2.16.1 to 3.0.0.
- [Release notes](https://github.com/koajs/koa/releases)
- [Changelog](https://github.com/koajs/koa/blob/master/History.md)
- [Commits](koajs/koa@v2.16.1...v3.0.0)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/server/package.json

@@ -25,7 +25,7 @@
     "co-body": "6.2.0",
     "formidable": "2.1.5",
     "keygrip": "1.1.0",
-    "koa": "2.16.1"
+    "koa": "3.0.0"
   },
   "author": {
     "name": "Dirk de Visser",