Update dependency undici to v5.26.4 (#399)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [undici](https://undici.nodejs.org) ([source](https://togithub.com/nodejs/undici)) | [`5.26.3` -> `5.26.4`](https://renovatebot.com/diffs/npm/undici/5.26.3/5.26.4) | [![age](https://developer.mend.io/api/mc/badges/age/npm/undici/5.26.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/undici/5.26.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/undici/5.26.3/5.26.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/undici/5.26.3/5.26.4?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>nodejs/undici (undici)</summary>

### [`v5.26.4`](https://togithub.com/nodejs/undici/releases/tag/v5.26.4)

[Compare Source](https://togithub.com/nodejs/undici/compare/v5.26.3...v5.26.4)

#### What's Changed

-   use esbuild define/hooks by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [https://github.com/nodejs/undici/pull/2342](https://togithub.com/nodejs/undici/pull/2342)
-   fix request's arrayBuffer returning uint8 instead of arraybuffer by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [https://github.com/nodejs/undici/pull/2344](https://togithub.com/nodejs/undici/pull/2344)
-   fix: skip readMore call if parser is null or undefined by [@&#8203;iiAku](https://togithub.com/iiAku) in [https://github.com/nodejs/undici/pull/2346](https://togithub.com/nodejs/undici/pull/2346)
-   test: first attempt for flaky fix by [@&#8203;metcoder95](https://togithub.com/metcoder95) in [https://github.com/nodejs/undici/pull/2337](https://togithub.com/nodejs/undici/pull/2337)
-   test: only include WebSocket in WPT Report where it's landed by [@&#8203;panva](https://togithub.com/panva) in [https://github.com/nodejs/undici/pull/2351](https://togithub.com/nodejs/undici/pull/2351)
-   Update DispatchInterceptor.md by [@&#8203;Uzlopak](https://togithub.com/Uzlopak) in [https://github.com/nodejs/undici/pull/2354](https://togithub.com/nodejs/undici/pull/2354)
-   fix: Avoid error for stream() being aborted by [@&#8203;BobNobrain](https://togithub.com/BobNobrain) in [https://github.com/nodejs/undici/pull/2355](https://togithub.com/nodejs/undici/pull/2355)
-   fix names with esbuild by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [https://github.com/nodejs/undici/pull/2359](https://togithub.com/nodejs/undici/pull/2359)

#### New Contributors

-   [@&#8203;iiAku](https://togithub.com/iiAku) made their first contribution in [https://github.com/nodejs/undici/pull/2346](https://togithub.com/nodejs/undici/pull/2346)
-   [@&#8203;Uzlopak](https://togithub.com/Uzlopak) made their first contribution in [https://github.com/nodejs/undici/pull/2354](https://togithub.com/nodejs/undici/pull/2354)
-   [@&#8203;BobNobrain](https://togithub.com/BobNobrain) made their first contribution in [https://github.com/nodejs/undici/pull/2355](https://togithub.com/nodejs/undici/pull/2355)

**Full Changelog**: nodejs/undici@v5.26.3...v5.26.4

</details>

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packages/next/package.json

@@ -279,7 +279,7 @@
     "timers-browserify": "2.0.12",
     "tty-browserify": "0.0.1",
     "ua-parser-js": "1.0.36",
-    "undici": "5.26.3",
+    "undici": "5.26.4",
     "unistore": "3.5.2",
     "util": "0.12.5",
     "uuid": "9.0.1",