chore(@vant/cli): bump all css related loaders (#9295)

packages/vant-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vant/cli",
-  "version": "3.12.0-alpha.2-jest",
+  "version": "3.12.0-alpha.0-postcss",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
   "bin": {
@@ -34,7 +34,7 @@
   "devDependencies": {
     "@types/fs-extra": "^9.0.11",
     "@types/lodash": "^4.14.170",
-    "@types/postcss-load-config": "^2.0.1"
+    "@types/postcss-load-config": "^3.0.1"
   },
   "dependencies": {
     "@babel/core": "^7.14.5",
@@ -50,16 +50,16 @@
     "@vant/touch-emulator": "^1.3.0",
     "@vue/babel-plugin-jsx": "^1.0.6",
     "@vue/test-utils": "2.0.0-rc.6",
-    "autoprefixer": "^9.0.0",
+    "autoprefixer": "^10.0.0",
     "babel-jest": "^27.0.6",
     "babel-loader": "^8.2.2",
     "babel-plugin-import": "^1.13.3",
     "chokidar": "^3.5.1",
-    "clean-css": "^4.2.3",
+    "clean-css": "^5.1.5",
     "commander": "^6.2.1",
     "consola": "^2.15.3",
     "conventional-changelog": "^3.1.24",
-    "css-loader": "^4.0.0",
+    "css-loader": "^6.2.0",
     "eslint": "^7.28.0",
     "fast-glob": "^3.2.5",
     "fork-ts-checker-webpack-plugin": "^6.2.10",
@@ -71,19 +71,19 @@
     "jest-canvas-mock": "^2.3.1",
     "jest-serializer-html": "^7.1.0",
     "less": "^4.1.1",
-    "less-loader": "^7.2.1",
+    "less-loader": "^10.0.1",
     "lint-staged": "^10.5.3",
     "lodash": "^4.17.21",
     "ora": "^5.4.1",
     "portfinder": "^1.0.28",
     "postcss": "^7.0.36",
     "postcss-load-config": "^3.0.1",
-    "postcss-loader": "^4.1.0",
+    "postcss-loader": "^6.1.1",
     "prettier": "2.1.0",
     "release-it": "^14.8.0",
     "sass": "^1.34.1",
-    "sass-loader": "^10.1.1",
-    "style-loader": "^2.0.0",
+    "sass-loader": "^12.1.0",
+    "style-loader": "^3.2.1",
     "stylelint": "^13.13.1",
     "ts-jest": "^27.0.5",
     "typescript": "^4.3.2",