Update dependency sass-loader to v8

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
sass-loader	devDependencies	major	^8.0.0	source

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Release Notes

webpack-contrib/sass-loader

v8.0.0

Compare Source

⚠ BREAKING CHANGES

• minimum required webpack version is 4.36.0
• minimum required node.js version is 8.9.0
• move all sass (includePaths, importer, functions) options to the sassOptions option. The functions option can't be used as Function, you should use sassOption as Function to achieve this.
• the data option was renamed to the prependData option
• default value of the sourceMap option depends on the devtool value (eval/false values don't enable source map generation)

Features

• automatically use the fibers package if it is possible (#​744) (96184e1)
• source map generation depends on the devtool option (#​743) (fcea88e)
• validate loader options (#​737) (7b543fc)
• reworked error handling from node-sass/sass
• improve resolution for @import (including support _index and index files in a directory)

Bug Fixes

• compatibility with pnp

7.3.1 (2019-08-20)

Bug Fixes

• minimum node version in package.json (#​733) (1175920)

v7.3.1

Compare Source

⚠ BREAKING CHANGES

• minimum required webpack version is 4.36.0
• minimum required node.js version is 8.9.0
• move all sass (includePaths, importer, functions) options to the sassOptions option. The functions option can't be used as Function, you should use sassOption as Function to achieve this.
• the data option was renamed to the prependData option
• default value of the sourceMap option depends on the devtool value (eval/false values don't enable source map generation)

Features

• automatically use the fibers package if it is possible (#​744) (96184e1)
• source map generation depends on the devtool option (#​743) (fcea88e)
• validate loader options (#​737) (7b543fc)
• reworked error handling from node-sass/sass
• improve resolution for @import (including support _index and index files in a directory)

Bug Fixes

• compatibility with pnp

7.3.1 (2019-08-20)

Bug Fixes

• minimum node version in package.json (#​733) (1175920)

v7.3.0

Compare Source

Bug Fixes

• handle module import ending / as module (#​728) (997a255)
• resolution algorithm (#​720) (0e94940)
• use "compressed" output when mode is "production" (#​723) (b2af379)

Features

• webpackImporter option (#​732) (6f4ea37)

v7.2.0

Compare Source

Bug Fixes

• better handle stdin in sources (#​681) (e279f2a)
• prefer sass/scss/css extensions (#​711) (6fc9d4e)
• relax node engine (#​708) (2a51502)

Features

• allow passing functions option as function (#​651) (6c9654d)
• support data as Function (#​648) (aa64e1b)
• support sass and style fields in package.json (#​647) (a8709c9)
• support auto resolving dart-sass (ff90dd6)

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