chore(deps): bump koa from 2.16.0 to 2.16.1 (#1980)

Bumps [koa](https://github.com/koajs/koa) from 2.16.0 to 2.16.1.
- [Release notes](https://github.com/koajs/koa/releases)
- [Changelog](https://github.com/koajs/koa/blob/master/History.md)
- [Commits](koajs/koa@2.16.0...v2.16.1)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 2.16.1
  dependency-type: indirect
...

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Author: dependabot[bot]