chore!: bump stylus-loader from v3 to v4 (#6130)

Author: jeneser

packages/@vue/cli-service/generator/index.js

@@ -50,8 +50,8 @@ module.exports = (api, options) => {
         'less-loader': '^5.0.0'
       },
       stylus: {
-        'stylus': '^0.54.7',
-        'stylus-loader': '^3.0.2'
+        'stylus': '^0.54.8',
+        'stylus-loader': '^4.3.1'
       }
     }
 

packages/@vue/cli-service/lib/config/css.js

@@ -234,9 +234,7 @@ module.exports = (api, rootOptions) => {
       ))
     }
     createCSSRule('less', /\.less$/, 'less-loader', loaderOptions.less)
-    createCSSRule('stylus', /\.styl(us)?$/, 'stylus-loader', Object.assign({
-      preferPathResolver: 'webpack'
-    }, loaderOptions.stylus))
+    createCSSRule('stylus', /\.styl(us)?$/, 'stylus-loader', loaderOptions.stylus)
 
     // inject CSS extraction plugin
     if (shouldExtract) {