chore(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] <support@github.com>

Author: dependabot[bot]

pnpm-lock.yaml

@@ -67,7 +67,7 @@ catalog:
   jose: ^6.0.11
   jsdom: ^26.1.0
   katex: ^0.16.22
-  koa: ^2.16.1
+  koa: ^3.0.0
   koa-bodyparser: ^4.4.1
   koa-cors: ^0.0.16
   koa-router: ^12.0.0