chore(deps): update pnpm to v8.15.8

Author: renovate[bot]

package.json

@@ -14,7 +14,7 @@
     "prepublishOnly": "pnpm test && pnpm check && pnpm build"
   },
   "type": "module",
-  "packageManager": "pnpm@8.15.0",
+  "packageManager": "pnpm@8.15.8",
   "dependencies": {
     "execa": "^8.0.1",
     "p-safe": "^0.1.0"