Update dependency sass-loader to v3.2.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sass-loader	3.1.2 -> 3.2.3

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Release Notes

webpack-contrib/sass-loader (sass-loader)

### [`v3.2.3`](https://togithub.com/webpack-contrib/sass-loader/compare/v3.2.2...989ba0ef32485df68e0b7245040a650c3b06fce4) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v3.2.2...989ba0ef32485df68e0b7245040a650c3b06fce4) ### [`v3.2.2`](https://togithub.com/webpack-contrib/sass-loader/blob/HEAD/CHANGELOG.md#322-2016-06-26) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v3.2.1...v3.2.2) ##### Bug Fixes - Fix incorrect source map paths [#​250](https://togithub.com/webpack-contrib/sass-loader/pull/250) ### [`v3.2.1`](https://togithub.com/webpack-contrib/sass-loader/blob/HEAD/CHANGELOG.md#321-2016-06-19) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v3.2.0...v3.2.1) ##### Bug Fixes - Add `webpack@^2.1.0-beta` as peer dependency [#​233](https://togithub.com/webpack-contrib/sass-loader/pull/233) ### [`v3.2.0`](https://togithub.com/webpack-contrib/sass-loader/blob/HEAD/CHANGELOG.md#320-2016-03-12) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v3.1.2...v3.2.0) ##### Features - Append file content instead of overwriting when `data`-option is already present [#​216](https://togithub.com/webpack-contrib/sass-loader/pull/216) - Make `indentedSyntax` option a bit smarter [#​196](https://togithub.com/webpack-contrib/sass-loader/pull/196)

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