build: update sass to version 1.17.4

Author: renovate-bot

packages/angular_devkit/build_angular/package.json

@@ -34,7 +34,7 @@
  "postcss-loader": "3.0.0",
  "raw-loader": "1.0.0",
  "rxjs": "6.4.0",
- "sass": "1.17.3",
+ "sass": "1.17.4",
  "sass-loader": "7.1.0",
  "semver": "6.0.0",
  "source-map-support": "0.5.11",

yarn.lock

@@ -8020,7 +8020,14 @@ sass-loader@7.1.0:
  pify "^3.0.0"
  semver "^5.5.0"
 
-sass@1.17.3, sass@^1.17.3:
+sass@1.17.4:
+ version "1.17.4"
+ resolved "https://registry.yarnpkg.com/sass/-/sass-1.17.4.tgz#b65b9d11f5cef9b96d6c44566ab91d6357210dbd"
+ integrity sha512-NM/RkY54d6C5xJMWk7Z+p0/TfIB71/46/T335Egc0O3G+NeKKVFz1s9EwBlekRnYq3fUCTsbk0zPNMpee5LIdA==
+ dependencies:
+ chokidar "^2.0.0"
+
+sass@^1.17.3:
  version "1.17.3"
  resolved "https://registry.yarnpkg.com/sass/-/sass-1.17.3.tgz#19f9164cf8653b9fca670a64e53285272c96d192"
  integrity sha512-S4vJawbrNUxJUBiHLXPYUKZCoO6cvq3/3ZFBV66a+PafTxcDEFJB+FHLDFl0P+rUfha/703ajEXMuGTYhJESkQ==