Update dependency undici to v6.16.0 (#989)

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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)) | [`6.15.0` -> `6.16.0`](https://renovatebot.com/diffs/npm/undici/6.15.0/6.16.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/undici/6.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/undici/6.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/undici/6.15.0/6.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/undici/6.15.0/6.16.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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---

### Release Notes

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

### [`v6.16.0`](https://togithub.com/nodejs/undici/releases/tag/v6.16.0)

[Compare Source](https://togithub.com/nodejs/undici/compare/v6.15.0...v6.16.0)

#### What's Changed

-   add index to sequence converter errors by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [nodejs/undici#3178
-   build(deps-dev): bump borp from 0.12.0 to 0.13.0 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3179
-   build(deps): bump node from 21-alpine3.19 to 22-alpine3.19 in /build by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3180
-   build(deps): bump superagent from 8.1.2 to 9.0.2 in /benchmarks by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3181
-   fix: keep raw header name by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3183
-   fix(fetch): improve Headers and Request type-compatibility by [@&#8203;kettanaito](https://togithub.com/kettanaito) in [nodejs/undici#1964
-   fix 3 mimesniff tests by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [nodejs/undici#3185
-   build(deps): bump hendrikmuhs/ccache-action from 1.2.12 to 1.2.13 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3187
-   build(deps): bump codecov/codecov-action from 4.1.1 to 4.3.1 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3191
-   build(deps): bump github/codeql-action from 3.24.9 to 3.25.3 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3192
-   build(deps): bump actions/dependency-review-action from 4.2.5 to 4.3.2 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3189
-   build(deps): bump step-security/harden-runner from 2.7.0 to 2.7.1 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3188
-   build(deps): bump actions/upload-artifact from 4.3.1 to 4.3.3 by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3190
-   build(deps): bump node from `9459e24` to `487dc5d` in /build by [@&#8203;dependabot](https://togithub.com/dependabot) in [nodejs/undici#3195
-   perf: avoid spread in makeRequest() by [@&#8203;gunjam](https://togithub.com/gunjam) in [nodejs/undici#3193
-   refactor: code cleanup by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3194
-   fix parsing when receiving empty body websocket by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [nodejs/undici#3205
-   fix: MockResponseCallbackOptions type by [@&#8203;merojosa](https://togithub.com/merojosa) in [nodejs/undici#2951
-   docs(proxy): fix typo by [@&#8203;kanadgupta](https://togithub.com/kanadgupta) in [nodejs/undici#3207
-   fix websocket receiving an invalid utf-8 in close frame by [@&#8203;KhafraDev](https://togithub.com/KhafraDev) in [nodejs/undici#3206
-   perf: avoid setImmediate if body is reading by [@&#8203;ronag](https://togithub.com/ronag) in [nodejs/undici#3210
-   fix: request abort signal by [@&#8203;ronag](https://togithub.com/ronag) in [nodejs/undici#3209
-   fix: remove abort handler on close by [@&#8203;ronag](https://togithub.com/ronag) in [nodejs/undici#3211
-   fix: pass abort function by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3212
-   websocket: 200x faster generate mask by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3204
-   use FinalizationRegistry to cancel the body if response is collected by [@&#8203;mcollina](https://togithub.com/mcollina) in [nodejs/undici#3199
-   websocket: don't clone buffer if it's not needed. by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3214
-   websocket: use FastBuffer by [@&#8203;tsctx](https://togithub.com/tsctx) in [nodejs/undici#3213

#### New Contributors

-   [@&#8203;kettanaito](https://togithub.com/kettanaito) made their first contribution in [nodejs/undici#1964
-   [@&#8203;gunjam](https://togithub.com/gunjam) made their first contribution in [nodejs/undici#3193
-   [@&#8203;merojosa](https://togithub.com/merojosa) made their first contribution in [nodejs/undici#2951
-   [@&#8203;kanadgupta](https://togithub.com/kanadgupta) made their first contribution in [nodejs/undici#3207

**Full Changelog**: nodejs/undici@v6.15.0...v6.16.0

</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": "1.0.37",
-    "undici": "6.15.0",
+    "undici": "6.16.0",
     "unistore": "3.5.2",
     "util": "0.12.5",
     "uuid": "9.0.1",