chore(deps-dev): bump postcss in /genesis-q-mem/commerce-ui

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.15.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.15)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.15
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

genesis-q-mem/commerce-ui/package-lock.json

@@ -27,7 +27,7 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.15",
     "tailwindcss": "^3.4.17",
     "vite": "^7.2.4"
   }