Update dependency sass-loader to v10

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
sass-loader	devDependencies	major	9.0.3 -> 10.0.1

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Release Notes

webpack-contrib/sass-loader

### [`v10.0.1`](https://togithub.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md#​1001-httpsgithubcomwebpack-contribsass-loadercomparev1000v1001-2020-08-25) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v10.0.0...v10.0.1) ### [`v10.0.0`](https://togithub.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md#​1000-httpsgithubcomwebpack-contribsass-loadercomparev1000-rc0v1000-2020-08-24) [Compare Source](https://togithub.com/webpack-contrib/sass-loader/compare/v9.0.3...v10.0.0) ##### Bug Fixes - handle absolute windows path in source maps

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