fix(deps): update dependency koa to v3.0.2 (#256)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [koa](https://koajs.com)
([source](https://redirect.github.com/koajs/koa)) | [`3.0.1` ->
`3.0.2`](https://renovatebot.com/diffs/npm/koa/3.0.1/3.0.2) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/koa/3.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/koa/3.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/koa/3.0.1/3.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/koa/3.0.1/3.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>koajs/koa (koa)</summary>

###
[`v3.0.2`](https://redirect.github.com/koajs/koa/releases/tag/v3.0.2)

[Compare
Source](https://redirect.github.com/koajs/koa/compare/v3.0.1...v3.0.2)

#### What's Changed

- fix: fixes response.attachment behaviour leads to Content-Type
Sniffing by
[@&#8203;yowainwright](https://redirect.github.com/yowainwright) in
[#&#8203;1904](https://redirect.github.com/koajs/koa/pull/1904)
- chore: use NPM trusted publishing with semver tag triggers by
[@&#8203;Copilot](https://redirect.github.com/Copilot) in
[#&#8203;1907](https://redirect.github.com/koajs/koa/pull/1907)

#### New Contributors

- [@&#8203;Copilot](https://redirect.github.com/Copilot) made their
first contribution in
[#&#8203;1907](https://redirect.github.com/koajs/koa/pull/1907)

**Full Changelog**:
<koajs/koa@v3.0.1...v3.0.2>

</details>

---

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package.json

@@ -22,7 +22,7 @@
     "@graphile-contrib/pg-simplify-inflector": "6.1.0",
     "@koa/router": "14.0.0",
     "dotenv": "17.2.3",
-    "koa": "3.0.1",
+    "koa": "3.0.2",
     "koa-bodyparser": "4.4.1",
     "koa-compress": "5.1.1",
     "koa-helmet": "8.0.1",