build(deps): bump koa and @nx/angular

Bumps [koa](https://github.com/koajs/koa) to 3.0.1 and updates ancestor dependency [@nx/angular](https://github.com/nrwl/nx/tree/HEAD/packages/angular). These dependencies need to be updated together.


Updates `koa` from 2.16.1 to 3.0.1
- [Release notes](https://github.com/koajs/koa/releases)
- [Changelog](https://github.com/koajs/koa/blob/master/History.md)
- [Commits](koajs/koa@v2.16.1...v3.0.1)

Updates `@nx/angular` from 21.1.2 to 21.4.0
- [Release notes](https://github.com/nrwl/nx/releases)
- [Commits](https://github.com/nrwl/nx/commits/21.4.0/packages/angular)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 3.0.1
  dependency-type: indirect
- dependency-name: "@nx/angular"
  dependency-version: 21.4.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]