chore(deps): update dependency postcss to v8.5.8 (#653)

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

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "eslint-plugin-react-hooks": "4.6.2",
     "globals": "^16.3.0",
     "jsdom": "^26.1.0",
-    "postcss": "8.5.6",
+    "postcss": "8.5.8",
     "prettier": "3.6.2",
     "semantic-release": "23.1.1",
     "tailwindcss": "^4.1.12",