chore(deps): update pnpm to v9.15.4

Author: renovate[bot]

package.json

@@ -78,7 +78,7 @@
     "vfile-reporter": "^8.1.1",
     "yaml": "^2.6.1"
   },
-  "packageManager": "pnpm@9.15.0",
+  "packageManager": "pnpm@9.15.4",
   "engines": {
     "node": "^18.17.0 || >=20.3.0"
   }