chore(deps): update pnpm to v8.15.9

Author: renovate[bot]

package.json

@@ -25,5 +25,5 @@
     "typescript": "5.9.2",
     "vite": "6.3.5"
   },
-  "packageManager": "pnpm@8.6.7"
+  "packageManager": "pnpm@8.15.9"
 }