chore(deps): update pnpm to v9.15.9

Author: renovate[bot]

package.json

@@ -79,7 +79,7 @@
     "webpack": "5.99.9",
     "webpack-cli": "6.0.1"
   },
-  "packageManager": "pnpm@9.15.2",
+  "packageManager": "pnpm@9.15.9",
   "engines": {
     "node": ">=20"
   }