chore(deps): update babel monorepo

Author: renovate-bot

package.json

@@ -28,10 +28,10 @@
     "react-draggable": "^3.0.5"
   },
   "devDependencies": {
-    "@babel/cli": "7.0.0-beta.42",
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/node": "7.0.0-beta.42",
-    "@babel/preset-env": "7.0.0-beta.42",
+    "@babel/cli": "7.0.0-beta.49",
+    "@babel/core": "7.0.0-beta.50",
+    "@babel/node": "7.0.0-beta.49",
+    "@babel/preset-env": "7.0.0-beta.50",
     "@storybook/addon-actions": "3.3.15",
     "@storybook/addon-info": "3.3.15",
     "@storybook/addon-links": "3.3.15",