Update dependency node-sass to v4.8.3

[renovate[bot]]

This Pull Request updates dependency node-sass from v4.7.2 to v4.8.3

Note: This PR was created on a configured schedule ("before 5am on monday") and will not receive updates outside those times.

Release Notes

### [`v4.8.0`](https://github.com/sass/node-sass/blob/master/CHANGELOG.md#v480) https://github.com/sass/node-sass/releases/tag/v4.8.0 --- ### [`v4.8.1`](https://github.com/sass/node-sass/blob/master/CHANGELOG.md#v481) https://github.com/sass/node-sass/releases/tag/v4.8.1 --- ### [`v4.8.2`](https://github.com/sass/node-sass/releases/v4.8.2) ##### Fixes - Fix bug with color functions in custom importers (#​2280) #### Supported Environments | OS | Architecture | Node | | --- | --- | --- | | Windows | x86 & x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8, 9 | | OSX | x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8, 9 | | Linux* | x86 & x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8, 9 | | Alpine Linux | x64 | 4, 6, 7, 8, 9 | | FreeBSD 10+ | amd64 | 4, 6, 8** | | FreeBSD 10+ | i386 | 4, 6, 8** | *Linux support refers to Ubuntu, Debian, and CentOS 5+ *node 9 support broken #​2293 --- ### [`v4.8.3`](https://github.com/sass/node-sass/releases/v4.8.3) ##### Features - Bump LibSass to [Atom](https://github.com/sass/libsass/releases/tag/3.5.2) (#​2294) ##### Fixes - Fix crash with custom importers on node 9 (#​2293) #### Supported Environments | OS | Architecture | Node | | --- | --- | --- | | Windows | x86 & x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8, 9 | | OSX | x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8, 9 | | Linux* | x86 & x64 | 0.10, 0.12, 1, 2, 3, 4, 5, 6, 7, 8**, 9** | | Alpine Linux | x64 | 4, 6, 7, 8, 9 | | FreeBSD 10+ | amd64 | 4, 6, 8, 9 | | FreeBSD 10+ | i386 | 4, 6, 8, 9 | *Linux support refers to Ubuntu, Debian, and CentOS 5+ ** Node 8 and 9 are not supported on CentOS 5 ---

Commits

#### v4.8.0 - [`e094395`](https://github.com/sass/node-sass/commit/e09439555a9df1032445610844d99bcab2aa9ba6) Update TROUBLESHOOTING.md (#​2198) - [`a96e2ff`](https://github.com/sass/node-sass/commit/a96e2ff7c62fbc750ffc8bf3f21fdb0b6ee512bd) (editorconfig) s/spaces/space/ - [`a60caf4`](https://github.com/sass/node-sass/commit/a60caf43fccd77fb8d84dc48ee94f44b11dce4a6) Add a Git .mailmap with mgol's new name - [`e797a34`](https://github.com/sass/node-sass/commit/e797a34c1da5128b53bf9715b6e7b803d0df177a) build: Add back Appveyor 0.12-3 (#​2255) - [`abbc657`](https://github.com/sass/node-sass/commit/abbc65770ea6f16d2591cfc8046021301ed29d2d) Use HTML comments to show a reduced Markdown - [`dd805fc`](https://github.com/sass/node-sass/commit/dd805fc870b5191ab8c7d19f6ed3594afbdaa322) Emit normal output as info not warn - [`78a74e9`](https://github.com/sass/node-sass/commit/78a74e910ae4bc9cc609361ee113811637ff9f59) Don't emit info output in quiet mode - [`639173e`](https://github.com/sass/node-sass/commit/639173e46c6e4197ecc649568c168919b43b3f93) Bump sass-spec@​3.5.0 - [`fe572eb`](https://github.com/sass/node-sass/commit/fe572eb1868ec7db2ea1a2d51fbae5aab5fe6419) Bump LibSass to 3.5.0 - [`0626988`](https://github.com/sass/node-sass/commit/0626988063ec4b56346cb29d41e9fa9e2223a1e2) docs: updated @​10xLaCroixDrinker's username - [`863f29f`](https://github.com/sass/node-sass/commit/863f29f8fe29887a705513a9b74f84ca4b0f3784) Bump minimum nan@​2.9.2 - [`a2d2a63`](https://github.com/sass/node-sass/commit/a2d2a636339e74577d48a97c36d0900e77c9512f) Pre-empt support for Node 10 - [`b926705`](https://github.com/sass/node-sass/commit/b926705b3b6b96b7d0350da0f7199c0a5f5bfa4e) Use watcher removed function on deleted - [`1ed5ce9`](https://github.com/sass/node-sass/commit/1ed5ce94a2d765034d44468461b9fa05293a9e36) Allow setting of SASS_BINARY_DIR without setting explicit binary name - [`3331891`](https://github.com/sass/node-sass/commit/3331891a89fc65b91b2c184f9159ec189a80fd66) Add SASS_BINARY_DIR to Readme - [`3898350`](https://github.com/sass/node-sass/commit/389835029f393bb8fdc85d26786c71bcca2845f7) Install script should not write partially downloaded binaries - [`7355176`](https://github.com/sass/node-sass/commit/7355176858d6ba79b21edb8c5f67dd99ec06e74d) Update CHANGELOG - [`0b6baf3`](https://github.com/sass/node-sass/commit/0b6baf38271b6d55f8a23b09158228381fd24de3) 4.8.0 #### v4.8.1 - [`b4f82d8`](https://github.com/sass/node-sass/commit/b4f82d806cbc6796a03c3b266cee5463d2a5b0e4) Fix wrong binary encoding - [`a4564cc`](https://github.com/sass/node-sass/commit/a4564cca023c9c487b4bbb29c463114b12c287c3) Update CHANGELOG - [`96d0d0b`](https://github.com/sass/node-sass/commit/96d0d0b1e49b716e5aa418c72dc29cff4454707f) 4.8.1 #### v4.8.2 - [`3709357`](https://github.com/sass/node-sass/commit/37093575ee9736a513decb16e581f9fc789d56f7) Bump LibSass to 3.5.1 - [`7648fc4`](https://github.com/sass/node-sass/commit/7648fc461d68e2995278cdb7b2946d488a5e182f) 4.8.2 #### v4.8.3 - [`84754d5`](https://github.com/sass/node-sass/commit/84754d536838776db0856b81b168eec5c195cf28) Bump LibSass 3.5.2 - [`5a8ea51`](https://github.com/sass/node-sass/commit/5a8ea51363f2897e4e9f6ac85211c55e49824cd9) Lock to nan@​2.9.2 - [`b5c73ac`](https://github.com/sass/node-sass/commit/b5c73acb5df019b552c49aaf8bcb46c868f7cf13) Update NAN - [`ad00d8b`](https://github.com/sass/node-sass/commit/ad00d8b46c73b9cc705b504b2b17ab75b8ca9f93) Synchronous call should be synchronous - [`968020e`](https://github.com/sass/node-sass/commit/968020e9fe20d9ab463de4e04125b41571ef8a07) Propagate async_context - [`2558763`](https://github.com/sass/node-sass/commit/2558763266ecb515951809e5d6b9c846faa17a14) Silence g++7 switch case fallthrough warnings - [`b2df434`](https://github.com/sass/node-sass/commit/b2df434a02c10b2263d3879fe75dfbed4460b75f) 4.8.3

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This PR has been generated by Renovate Bot.