Bump sass-loader from 6.0.7 to 7.1.0

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 6.0.7 to 7.1.0.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/sass-loader@v6.0.7...v7.1.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

package.json

@@ -143,7 +143,7 @@
     "require-extension-hooks": "~0.3.3",
     "require-extension-hooks-babel": "~0.1.1",
     "require-extension-hooks-vue": "~1.0.0",
-    "sass-loader": "~6.0.7",
+    "sass-loader": "~7.1.0",
     "sinon": "^6.3.4",
     "source-map-support": "~0.5.6",
     "vue-docgen-api": "^2.3.11",

yarn.lock

@@ -10541,15 +10541,16 @@ sass-graph@^2.2.4:
     scss-tokenizer "^0.2.3"
     yargs "^7.0.0"
 
-sass-loader@~6.0.7:
-  version "6.0.7"
-  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-6.0.7.tgz#dd2fdb3e7eeff4a53f35ba6ac408715488353d00"
+sass-loader@~7.1.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-7.1.0.tgz#16fd5138cb8b424bf8a759528a1972d72aad069d"
   dependencies:
     clone-deep "^2.0.1"
     loader-utils "^1.0.1"
     lodash.tail "^4.1.1"
     neo-async "^2.5.0"
     pify "^3.0.0"
+    semver "^5.5.0"
 
 sax@>=0.6.0, sax@^1.2.4, sax@~1.2.1:
   version "1.2.4"