fix(deps): update dependency @unleash/nextjs to v1.4.0 (#355)

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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)
| [`1.3.0` ->
`1.4.0`](https://renovatebot.com/diffs/npm/@unleash%2fnextjs/1.3.0/1.4.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@unleash%2fnextjs/1.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@unleash%2fnextjs/1.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@unleash%2fnextjs/1.3.0/1.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@unleash%2fnextjs/1.3.0/1.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v1.4.0`](https://togithub.com/Unleash/unleash-client-nextjs/releases/tag/v1.4.0)

[Compare
Source](https://togithub.com/Unleash/unleash-client-nextjs/compare/v1.3.0...v1.4.0)

#### What's Changed

- feat: add feature_enabled to variant response by
[@&#8203;nunogois](https://togithub.com/nunogois) in
[https://github.com/Unleash/unleash-client-nextjs/pull/58](https://togithub.com/Unleash/unleash-client-nextjs/pull/58)
- Update README.md by [@&#8203;tepose](https://togithub.com/tepose) in
[https://github.com/Unleash/unleash-client-nextjs/pull/60](https://togithub.com/Unleash/unleash-client-nextjs/pull/60)
- chore: upgrade node client by
[@&#8203;kwasniew](https://togithub.com/kwasniew) in
[https://github.com/Unleash/unleash-client-nextjs/pull/61](https://togithub.com/Unleash/unleash-client-nextjs/pull/61)
- fix: breaking yarn change for pnpm coop by
[@&#8203;kwasniew](https://togithub.com/kwasniew) in
[https://github.com/Unleash/unleash-client-nextjs/pull/62](https://togithub.com/Unleash/unleash-client-nextjs/pull/62)
- chore: remove package manager from package json by
[@&#8203;kwasniew](https://togithub.com/kwasniew) in
[https://github.com/Unleash/unleash-client-nextjs/pull/63](https://togithub.com/Unleash/unleash-client-nextjs/pull/63)
- fix: Upgrade vulnerable IP package by
[@&#8203;danilofuchs](https://togithub.com/danilofuchs) in
[https://github.com/Unleash/unleash-client-nextjs/pull/65](https://togithub.com/Unleash/unleash-client-nextjs/pull/65)

#### New Contributors

- [@&#8203;nunogois](https://togithub.com/nunogois) made their first
contribution in
[https://github.com/Unleash/unleash-client-nextjs/pull/58](https://togithub.com/Unleash/unleash-client-nextjs/pull/58)
- [@&#8203;tepose](https://togithub.com/tepose) made their first
contribution in
[https://github.com/Unleash/unleash-client-nextjs/pull/60](https://togithub.com/Unleash/unleash-client-nextjs/pull/60)
- [@&#8203;kwasniew](https://togithub.com/kwasniew) made their first
contribution in
[https://github.com/Unleash/unleash-client-nextjs/pull/61](https://togithub.com/Unleash/unleash-client-nextjs/pull/61)
- [@&#8203;danilofuchs](https://togithub.com/danilofuchs) made their
first contribution in
[https://github.com/Unleash/unleash-client-nextjs/pull/65](https://togithub.com/Unleash/unleash-client-nextjs/pull/65)

**Full Changelog**:
Unleash/unleash-client-nextjs@v1.3.0...v1.4.0

</details>

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