[Snyk] Upgrade react-dom from 15.4.0 to 15.6.2

Snyk has created this PR to upgrade react-dom from 15.4.0 to 15.6.2.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

The recommended version is 13 versions ahead of your current version.
The recommended version was released 2 years ago, on 2017-09-26.

Release notes

Package name: react-dom

15.6.2 - 2017-09-26
15.6.2 (September 25, 2017)

All Packages
- Switch from BSD + Patents to MIT license
React DOM
- Fix a bug where modifying document.documentMode would trigger IE detection in other browsers, breaking change events. (@aweary in #10032)
- CSS Columns are treated as unitless numbers. (@aweary in #10115)
- Fix bug in QtWebKit when wrapping synthetic events in proxies. (@walrusfruitcake in #10115)
- Prevent event handlers from receiving extra argument in development. (@aweary in #10115)
- Fix cases where onChange would not fire with defaultChecked on radio inputs. (@jquense in #10156)
- Add support for controlList attribute to DOM property whitelist (@nhunzaker in #9940)
- Fix a bug where creating an element with a ref in a constructor did not throw an error in development. (@iansu in #10025)
15.6.1 - 2017-06-15
15.6.1 (June 14, 2017)

React DOM
- Fix a crash on iOS Safari. (@jquense in #9960)
- Don't add px to custom CSS property values. (@TrySound in #9966)
15.6.0 - 2017-06-13
15.6.0 (June 13, 2017)

React
- Downgrade deprecation warnings to use console.warn instead of console.error. (@flarnie in #9753)
- Add a deprecation warning for React.createClass. Points users to create-react-class instead. (@flarnie in #9771)
- Add deprecation warnings and separate module for React.DOM factory helpers. (@nhunzaker in #8356)
- Warn for deprecation of React.createMixin helper, which was never used. (@aweary in #8853)
React DOM
- Add support for CSS variables in style attribute. (@aweary in #9302)
- Add support for CSS Grid style properties. (@ericsakmar in #9185)
- Fix bug where inputs mutated value on type conversion. (@nhunzaker in #9806)
- Fix issues with onChange not firing properly for some inputs. (@jquense in #8575)
- Fix bug where controlled number input mistakenly allowed period. (@nhunzaker in #9584)
- Fix bug where performance entries were being cleared. (@chrisui in #9451)
React Addons
- Fix AMD support for addons depending on react. (@flarnie in #9919)
- Fix isMounted() to return true in componentWillUnmount. (@mridgway in #9638)
- Fix react-addons-update to not depend on native Object.assign. (@gaearon in #9937)
- Remove broken Google Closure Compiler annotation from create-react-class. (@gaearon in #9933)
- Remove unnecessary dependency from react-linked-input. (@gaearon in #9766)
- Point react-addons-(css-)transition-group to the new package. (@gaearon in #9937)
15.6.0-rc.1 - 2017-06-01
15.5.4 - 2017-04-11
15.5.4 (April 11, 2017)

React Addons
- Critical Bugfix: Update the version of prop-types to fix critical bug. (@gaearon in 545c87f)
- Fix react-addons-create-fragment package to include loose-envify transform for Browserify users. (@mridgway in #9642)
React Test Renderer
- Fix compatibility with Enzyme by exposing batchedUpdates on shallow renderer. (@gaearon in #9382)
15.5.3 - 2017-04-08
15.5.2 - 2017-04-08
15.5.1 - 2017-04-07
15.5.0 - 2017-04-07
15.5.0-rc.2 - 2017-04-06
15.5.0-rc.1 - 2017-04-05
15.4.2 - 2017-01-06
15.4.1 - 2016-11-23
15.4.0 - 2016-11-16