chore(deps): update dependency postcss to v8.5.8 (#244)

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

Author: renovate[bot]

docs/package.json

@@ -27,7 +27,7 @@
     "@types/react": "19.2.13",
     "@types/react-dom": "19.2.3",
     "babel-plugin-react-compiler": "1.0.0",
-    "postcss": "8.5.6",
+    "postcss": "8.5.8",
     "shiki": "3.22.0",
     "tailwindcss": "4.1.18",
     "typescript": "5.9.3"