chore: update autoprefixer to 9.2.1

Author: xidedix

package.json

@@ -81,7 +81,7 @@
     "@babel/plugin-proposal-throw-expressions": "^7.0.0",
     "@babel/plugin-transform-runtime": "^7.1.0",
     "@babel/preset-env": "^7.1.0",
-    "autoprefixer": "^9.2.0",
+    "autoprefixer": "^9.2.1",
     "babel-eslint": "^10.0.1",
     "babel-plugin-external-helpers": "^7.0.0-beta.3",
     "babel-plugin-istanbul": "^5.1.0",