chore(deps): update dependency @nuxtjs/seo to ^2.0.0-rc.21 (#818)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@nuxtjs/seo](https://nuxtseo.com/)
([source](https://redirect.github.com/harlan-zw/nuxt-seo)) |
[`^2.0.0-rc.20` ->
`^2.0.0-rc.21`](https://renovatebot.com/diffs/npm/@nuxtjs%2fseo/2.0.0-rc.20/2.0.0-rc.21)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@nuxtjs%2fseo/2.0.0-rc.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@nuxtjs%2fseo/2.0.0-rc.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@nuxtjs%2fseo/2.0.0-rc.20/2.0.0-rc.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@nuxtjs%2fseo/2.0.0-rc.20/2.0.0-rc.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>harlan-zw/nuxt-seo (@&#8203;nuxtjs/seo)</summary>

###
[`v2.0.0-rc.21`](https://redirect.github.com/harlan-zw/nuxt-seo/releases/tag/v2.0.0-rc.21)

[Compare
Source](https://redirect.github.com/harlan-zw/nuxt-seo/compare/v2.0.0-rc.20...v2.0.0-rc.21)

#####    🐞 Bug Fixes

- **useBreadcrumbItems**: Nuxt instance in computed  -  by
[@&#8203;harlan-zw](https://redirect.github.com/harlan-zw)
[<samp>(c1696)</samp>](https://redirect.github.com/harlan-zw/nuxt-seo/commit/c1696ea)

#####     [View changes on
GitHub](https://redirect.github.com/harlan-zw/nuxt-seo/compare/v2.0.0-rc.20...v2.0.0-rc.21)

</details>

---

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are satisfied.

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---

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---

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package.json

@@ -90,7 +90,7 @@
     "@nuxtjs/google-fonts": "^3.2.0",
     "@nuxtjs/i18n": "^8.4.0",
     "@nuxtjs/robots": "^4.1.6",
-    "@nuxtjs/seo": "^2.0.0-rc.20",
+    "@nuxtjs/seo": "^2.0.0-rc.21",
     "@nuxtjs/sitemap": "^6.0.1",
     "@nuxtjs/tailwindcss": "^6.12.1",
     "@pinia/nuxt": "^0.5.4",