Bump koa and @nx/angular in /core (#295)

Bumps [koa](https://github.com/koajs/koa) to 3.0.3 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 3.0.1 to 3.0.3
- [Release notes](https://github.com/koajs/koa/releases)
- [Changelog](https://github.com/koajs/koa/blob/master/History.md)
- [Commits](koajs/koa@v3.0.1...v3.0.3)

Updates `@nx/angular` from 21.5.3 to 22.1.0
- [Release notes](https://github.com/nrwl/nx/releases)
- [Commits](https://github.com/nrwl/nx/commits/22.1.0/packages/angular)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 3.0.3
  dependency-type: indirect
- dependency-name: "@nx/angular"
  dependency-version: 22.1.0
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]