fix(deps): update dependency @unleash/nextjs to v1.4.2 (#142)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@unleash/nextjs](https://togithub.com/Unleash/unleash-client-nextjs)
| [`1.4.1` ->
`1.4.2`](https://renovatebot.com/diffs/npm/@unleash%2fnextjs/1.4.1/1.4.2)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@unleash%2fnextjs/1.4.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@unleash%2fnextjs/1.4.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@unleash%2fnextjs/1.4.1/1.4.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@unleash%2fnextjs/1.4.1/1.4.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>Unleash/unleash-client-nextjs
(@&#8203;unleash/nextjs)</summary>

###
[`v1.4.2`](https://togithub.com/Unleash/unleash-client-nextjs/releases/tag/v1.4.2)

[Compare
Source](https://togithub.com/Unleash/unleash-client-nextjs/compare/v1.4.1...v1.4.2)

#### What's Changed

- Update SSR instructions in README.md by
[@&#8203;mltsy](https://togithub.com/mltsy) in
[https://github.com/Unleash/unleash-client-nextjs/pull/66](https://togithub.com/Unleash/unleash-client-nextjs/pull/66)
- fix: variant stickiness by [@&#8203;Tymek](https://togithub.com/Tymek)
in
[https://github.com/Unleash/unleash-client-nextjs/pull/70](https://togithub.com/Unleash/unleash-client-nextjs/pull/70)

**Full Changelog**:
Unleash/unleash-client-nextjs@v1.4.1...v1.4.2

</details>

---

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app/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@t3-oss/env-nextjs": "0.9.2",
-    "@unleash/nextjs": "1.4.1",
+    "@unleash/nextjs": "1.4.2",
     "@vercel/analytics": "1.2.2",
     "clsx": "2.1.0",
     "next": "14.1.4",