chore(deps): update yarn to v4.9.0 (#775)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [yarn](https://redirect.github.com/yarnpkg/berry)
([source](https://redirect.github.com/yarnpkg/berry/tree/HEAD/packages/yarnpkg-cli))
| [`4.8.1` ->
`4.9.0`](https://renovatebot.com/diffs/npm/yarn/4.8.1/4.9.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/@yarnpkg%2fcli/4.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@yarnpkg%2fcli/4.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@yarnpkg%2fcli/4.8.1/4.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@yarnpkg%2fcli/4.8.1/4.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>yarnpkg/berry (yarn)</summary>

###
[`v4.9.0`](https://redirect.github.com/yarnpkg/berry/compare/76596c5d3fb9a60fa1459b6a1d62df4cfa4c5701...2b26e3dff6fae778931445e8aca469e4bc2abac2)

[Compare
Source](https://redirect.github.com/yarnpkg/berry/compare/76596c5d3fb9a60fa1459b6a1d62df4cfa4c5701...2b26e3dff6fae778931445e8aca469e4bc2abac2)

</details>

---

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---

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package.json

@@ -169,9 +169,9 @@
     },
     "volta": {
         "node": "22.14.0",
-        "yarn": "4.8.1"
+        "yarn": "4.9.0"
     },
-    "packageManager": "yarn@4.8.1",
+    "packageManager": "yarn@4.9.0",
     "lint-staged": {
         "*": "biome format --write --no-errors-on-unmatched",
         "*.{mjs,js,ts}": "eslint --fix --ext mjs,js,ts",

website/package.json

@@ -40,7 +40,7 @@
     },
     "volta": {
         "node": "22.14.0",
-        "yarn": "4.8.1"
+        "yarn": "4.9.0"
     },
-    "packageManager": "yarn@4.8.1"
+    "packageManager": "yarn@4.9.0"
 }