Bump koa from 3.0.1 to 3.0.3

Bumps [koa](https://github.com/koajs/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)

---
updated-dependencies:
- dependency-name: koa
  dependency-version: 3.0.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

packages/altair-koa-middleware/package.json

@@ -15,7 +15,7 @@
     "@types/node": "^22.7.4",
     "@types/supertest": "^6.0.2",
     "jest": "29.4.1",
-    "koa": "^3.0.1",
+    "koa": "^3.0.3",
     "nodemon": "^2.0.12",
     "supertest": "^7.0.0",
     "ts-jest": "29.0.5",