chore(deps): update pnpm to v9.15.9

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| npm        | pnpm    | 9.15.8 | 9.15.9 |

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
     "prettier": "3.5.3",
     "prettier-plugin-packagejson": "2.5.10"
   },
-  "packageManager": "[email protected].8",
+  "packageManager": "[email protected].9",
   "engines": {
     "node": "^22.11.0",
     "pnpm": "^9.0.0"