chore(deps): update pnpm to v8.15.4 (#2627)

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

package.json

@@ -2,7 +2,7 @@
   "name": "@elk-zone/elk",
   "type": "module",
   "version": "0.13.0",
-  "packageManager": "pnpm@8.15.3",
+  "packageManager": "pnpm@8.15.4",
   "license": "MIT",
   "homepage": "https://elk.zone/",
   "main": "./nuxt.config.ts",