chore(deps-dev): bump postcss from 8.4.38 to 8.4.39 (#10052)

Author: dependabot[bot]

package-lock.json

@@ -165,7 +165,7 @@
     "npm-run-all": "^4.1.5",
     "oauth2-server": "^2.4.1",
     "open": "^10.1.0",
-    "postcss": "^8.4.38",
+    "postcss": "^8.4.39",
     "postcss-loader": "^8.1.1",
     "postcss-preset-env": "^9.5.14",
     "prettier": "^3.3.2",