fix(deps): update nextjs monorepo to v15.2.1 (#417)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[eslint-config-next](https://nextjs.org/docs/app/api-reference/config/eslint)
([source](https://redirect.github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next))
| [`15.2.0` ->
`15.2.1`](https://renovatebot.com/diffs/npm/eslint-config-next/15.2.0/15.2.1)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/eslint-config-next/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/eslint-config-next/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/eslint-config-next/15.2.0/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/eslint-config-next/15.2.0/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [next](https://nextjs.org)
([source](https://redirect.github.com/vercel/next.js)) | [`15.2.0` ->
`15.2.1`](https://renovatebot.com/diffs/npm/next/15.2.0/15.2.1) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/next/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/next/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/next/15.2.0/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/next/15.2.0/15.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>vercel/next.js (eslint-config-next)</summary>

###
[`v15.2.1`](https://redirect.github.com/vercel/next.js/compare/v15.2.0...633878112ef34fd569486c969261c3350509680d)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.2.0...v15.2.1)

</details>

<details>
<summary>vercel/next.js (next)</summary>

###
[`v15.2.1`](https://redirect.github.com/vercel/next.js/compare/v15.2.0...633878112ef34fd569486c969261c3350509680d)

[Compare
Source](https://redirect.github.com/vercel/next.js/compare/v15.2.0...v15.2.1)

</details>

---

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