build(deps-dev): bump koa from 2.15.3 to 3.2.0

Bumps [koa](https://github.com/koajs/koa) from 2.15.3 to 3.2.0.
- [Release notes](https://github.com/koajs/koa/releases)
- [Changelog](https://github.com/koajs/koa/blob/master/History.md)
- [Commits](koajs/koa@2.15.3...v3.2.0)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 3.2.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -17,7 +17,7 @@
   "description": "Koa JSON response body streaming for async iterators",
   "devDependencies": {
     "jest": "^29.7.0",
-    "koa": "^2.15.3",
+    "koa": "^3.2.0",
     "supertest": "^7.0.0"
   }
 }