feat(package.json): Update dependency autoprefixer to v10.0.4

Author: renovate-bot

package.json

@@ -23,7 +23,7 @@
     "@babel/preset-env": "7.12.7",
     "@babel/runtime": "7.12.5",
     "assets-webpack-plugin": "3.9.12",
-    "autoprefixer": "10.0.3",
+    "autoprefixer": "10.0.4",
     "babel-loader": "8.2.2",
     "babel-runtime": "6.26.0",
     "case-sensitive-paths-webpack-plugin": "2.3.0",