chore(deps): update dependency browser-sync to v3

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "autoprefixer": "9.5.1",
     "babel-loader": "8.0.5",
     "babel-plugin-istanbul": "5.1.2",
-    "browser-sync": "2.26.3",
+    "browser-sync": "3.0.4",
     "copy-webpack-plugin": "5.0.2",
     "css-loader": "1.0.1",
     "eslint": "5.16.0",