Update Yarn to v4.9.0 (#1041)

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

Author: renovate[bot]

docs/.yarn/releases/yarn-4.8.0.cjs

@@ -1,3 +1,3 @@
-yarnPath: .yarn/releases/yarn-4.8.0.cjs
+yarnPath: .yarn/releases/yarn-4.9.0.cjs
 nodeLinker: node-modules
 preferReuse: true

docs/.yarn/releases/yarn-4.9.0.cjs

@@ -22,5 +22,5 @@
     "node": ">=20",
     "yarn": "^4"
   },
-  "packageManager": "yarn@4.8.0"
+  "packageManager": "yarn@4.9.0"
 }