chore(deps): bump koa from 3.0.1 to 3.0.3 (#10444)

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](https://github.com/koajs/koa/compare/v3.0.1...v3.0.3)

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

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

package.json

@@ -156,7 +156,7 @@
     "jszip": "^3.10.1",
     "katex": "^0.16.22",
     "kbar": "0.1.0-beta.48",
-    "koa": "^3.0.1",
+    "koa": "^3.0.3",
     "koa-body": "^6.0.1",
     "koa-compress": "^5.1.1",
     "koa-helmet": "^6.1.0",