chore(deps-dev): bump postcss from 8.5.6 to 8.5.8 (#3478)

Author: dependabot[bot]

package-lock.json

@@ -152,7 +152,7 @@
     "npm-run-all": "~4.1.5",
     "pinst": "~3.0.0",
     "playwright": "~1.58.2",
-    "postcss": "~8.5.6",
+    "postcss": "~8.5.8",
     "postcss-cli": "~11.0.1",
     "prettier": "~3.8.1",
     "rimraf": "~6.1.2",