revert mini

Author: dreamwasp

packages/webpack-config/package.json

@@ -40,8 +40,8 @@
     "css-loader": "^3.6.0",
     "cssnano": "^4.1.11",
     "file-loader": "^3.0.1",
-    "mini-css-extract-plugin": "^2.9.0",
-    "postcss-flexbugs-fixes": "^4.1.0",
+    "mini-css-extract-plugin": "^0.12.0",
+    "postcssis-flexbugs-fixes": "^4.1.0",
     "postcss-focus-visible": "^5.0.0",
     "postcss-loader": "^3.0.0",
     "sass": "^1.59.3",