bump plotly.js version

Author: VeraZab

package.json

@@ -15,7 +15,7 @@
     "fast-isnumeric": "^1.1.1",
     "immutability-helper": "^2.7.1",
     "plotly-icons": "1.2.2",
-    "plotly.js": "1.42.0",
+    "plotly.js": "1.42.1",
     "prop-types": "^15.5.10",
     "raf": "^3.4.0",
     "react-color": "^2.13.8",
@@ -125,4 +125,4 @@
     "watch": "babel src --watch --out-dir lib --source-maps | node-sass -w src/styles/main.scss lib/react-chart-editor.css",
     "watch-test": "jest --watch"
   }
-}
+}