chore(deps-dev): bump postcss from 8.5.15 to 8.5.23

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.15 to 8.5.23.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.15...8.5.23)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.23
  dependency-type: direct:development
...

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

Author: dependabot[bot]

apps/backoffice-app/package.json

@@ -38,7 +38,7 @@
     "@vexl-next/eslint-config": "0.0.0",
     "@vexl-next/prettier-config": "0.0.0",
     "eslint": "^9.20.0",
-    "postcss": "^8.5.10",
+    "postcss": "^8.5.23",
     "prettier": "^3.3.2",
     "tailwindcss": "^4.1.12",
     "typescript": "~6.0.3"