chore(deps): update dependency testcafe to ^0.23.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
testcafe	devDependencies	patch	^0.23.2 -> ^0.23.3	homepage, source

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Release Notes

DevExpress/testcafe

### [`v0.23.3`](https://renovatebot.com/gh/DevExpress/testcafe/blob/master/CHANGELOG.md#v0233-2018-12-19) [Compare Source](https://renovatebot.com/gh/DevExpress/testcafe/compare/v0.23.2...v0.23.3) ##### Bug Fixes - Remote browsers now start after tests are compiled ([#​3219](https://renovatebot.com/gh/DevExpress/testcafe/issues/3219)) by [@​link89](https://renovatebot.com/gh/link89) - The TestCafe Docker image now includes version tags ([#​2315](https://renovatebot.com/gh/DevExpress/testcafe/issues/2315)) - Tests now fail with a meaningful error if no fixture is defined ([#​2913](https://renovatebot.com/gh/DevExpress/testcafe/issues/2913)) - Tests now resume correctly after a long waiting ([#​3070](https://renovatebot.com/gh/DevExpress/testcafe/issues/3070)) - TestCafe now throws a meaningful exception when taking screenshots in a browser that does not support it ([#​2878](https://renovatebot.com/gh/DevExpress/testcafe/issues/2878)) - Events are now simulated in the correct order when focusing an element after another element was focused on the `changed` event ([#​3098](https://renovatebot.com/gh/DevExpress/testcafe/issues/3098)) - The `Invalid calling object` exception is no longer thrown in IE11 ([testcafe-hammerhead/#​1846](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1846)) - The JSON parse error is no longer thrown when sending an XHR request ([testcafe-hammerhead/#​1839](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1839)) - Overridden functions now have the right prototype in an `iframe` without `src` ([testcafe-hammerhead/#​1824](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1824)) - `gulp-testcafe` now correctly closes Chrome after tests are finished ([testcafe-hammerhead/#​1826](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1826)) - Saving the `window` prototype to a property now works correctly ([testcafe-hammerhead/#​1828](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1828)) - Hammerhead is now retained after `document.close` in Firefox ([testcafe-hammerhead/#​1821](https://renovatebot.com/gh/DevExpress/testcafe-hammerhead/issues/1821))

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