Update sass-loader to 7.0.1 (#4376)

* Update sass-loader (#4363)

* Added bootstrap scss test (#4376)

packages/react-scripts/fixtures/kitchensink/.template.dependencies.json

@@ -3,6 +3,7 @@
     "@babel/plugin-transform-modules-commonjs": "7.0.0-beta.36",
     "@babel/polyfill": "7.0.0-beta.36",
     "@babel/register": "7.0.0-beta.36",
+    "bootstrap": "4.1.0",
     "chai": "3.5.0",
     "jsdom": "9.8.3",
     "mocha": "3.2.0",

packages/react-scripts/fixtures/kitchensink/src/features/webpack/assets/scss-styles.scss

@@ -1,3 +1,5 @@
+@import "~bootstrap/scss/bootstrap";
+
 #feature-scss-inclusion {
   background: ghostwhite;
   color: crimson;

packages/react-scripts/package.json

@@ -58,7 +58,7 @@
     "raf": "3.4.0",
     "react-dev-utils": "^5.0.0",
     "resolve": "1.6.0",
-    "sass-loader": "7.0.0",
+    "sass-loader": "7.0.1",
     "style-loader": "0.19.1",
     "svgr": "1.8.1",
     "sw-precache-webpack-plugin": "0.11.4",