chore(deps): update pnpm to v9.15.9

Author: renovate[bot]

package.json

@@ -53,7 +53,7 @@
     "vitest": "^3.0.7",
     "vue-tsc": "^2.2.4"
   },
-  "packageManager": "pnpm@9.15.6",
+  "packageManager": "pnpm@9.15.9",
   "publishConfig": {
     "access": "public"
   }