fix(deps): update dependency react-hot-loader to v4.3.12

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
react-hot-loader	dependencies	patch	4.3.11 -> 4.3.12	source

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Release Notes

gaearon/react-hot-loader

### [`v4.3.12`](https://renovatebot.com/gh/gaearon/react-hot-loader/blob/master/CHANGELOG.md#​440httpsgithubcomgaearonreact-hot-loadercomparev4311v4312-2018-11-01) [Compare Source](https://renovatebot.com/gh/gaearon/react-hot-loader/compare/v4.3.11...v4.3.12) ##### Features - React 16.5 and React 16.6 support. forwardRef, memo, lazy [#​1084](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1084) - Webpack loader [#​1098](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1098) - mark RHL sideEffect-free in production mode [#​1096](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1096) - babel plugin will remove `hot` in production [#​1091](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1091) ##### Bug Fixes - babel plugin will remove calls to `hot` in production mode to remove side-effect on webpack [#​1081](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1081) - class methods, deleted on update, will be deleted from proxy [#​1091](https://renovatebot.com/gh/gaearon/react-hot-loader/pull/1091)

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