chore(deps): update dependency react-router to v6.21.3 (#6162)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [react-router](https://togithub.com/remix-run/react-router)
([source](https://togithub.com/remix-run/react-router/tree/HEAD/packages/react-router))
| [`6.21.2` ->
`6.21.3`](https://renovatebot.com/diffs/npm/react-router/6.21.2/6.21.3)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/react-router/6.21.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/react-router/6.21.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/react-router/6.21.2/6.21.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/react-router/6.21.2/6.21.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>remix-run/react-router (react-router)</summary>

###
[`v6.21.3`](https://togithub.com/remix-run/react-router/blob/HEAD/packages/react-router/CHANGELOG.md#6213)

[Compare
Source](https://togithub.com/remix-run/react-router/compare/react-router@6.21.2...react-router@6.21.3)

##### Patch Changes

- Remove leftover `unstable_` prefix from `Blocker`/`BlockerFunction`
types
([#&#8203;11187](https://togithub.com/remix-run/react-router/pull/11187))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "after 7pm every weekday,before 5am
every weekday" in timezone Europe/Madrid, Automerge - At any time (no
schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/Unleash/unleash).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xNzMuMCIsInVwZGF0ZWRJblZlciI6IjM3LjE3My4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

website/package.json

@@ -75,7 +75,7 @@
     "@tsconfig/docusaurus": "2.0.2",
     "babel-loader": "9.1.3",
     "enhanced-resolve": "5.15.0",
-    "react-router": "6.21.2",
+    "react-router": "6.21.3",
     "replace-in-file": "7.1.0",
     "typescript": "4.8.4"
   }

website/yarn.lock

@@ -9775,10 +9775,10 @@ react-router@5.3.4, react-router@^5.3.3:
     tiny-invariant "^1.0.2"
     tiny-warning "^1.0.0"
 
-react-router@6.21.2:
-  version "6.21.2"
-  resolved "https://registry.yarnpkg.com/react-router/-/react-router-6.21.2.tgz#8820906c609ae7e4e8f926cc8eb5ce161428b956"
-  integrity sha512-jJcgiwDsnaHIeC+IN7atO0XiSRCrOsQAHHbChtJxmgqG2IaYQXSnhqGb5vk2CU/wBQA12Zt+TkbuJjIn65gzbA==
+react-router@6.21.3:
+  version "6.21.3"
+  resolved "https://registry.yarnpkg.com/react-router/-/react-router-6.21.3.tgz#8086cea922c2bfebbb49c6594967418f1f167d70"
+  integrity sha512-a0H638ZXULv1OdkmiK6s6itNhoy33ywxmUFT/xtSoVyf9VnC7n7+VT4LjVzdIHSaF5TIh9ylUgxMXksHTgGrKg==
   dependencies:
     "@remix-run/router" "1.14.2"