chore(deps): update pnpm to v9.15.4 (#643)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -10,7 +10,7 @@
   ],
   "funding": "https://github.com/sponsors/ota-meshi",
   "license": "MIT",
-  "packageManager": "[email protected].3",
+  "packageManager": "[email protected].4",
   "engines": {
     "node": "^18.20.4 || ^20.18.0 || >=22.10.0"
   },