Bump node-sass from 4.13.0 to 4.13.1

Bumps [node-sass](https://github.com/sass/node-sass) from 4.13.0 to 4.13.1.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v4.13.0...v4.13.1)

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

package.json

@@ -44,7 +44,7 @@
     "extract-css-chunks-webpack-plugin": "4.7.1",
     "file-loader": "5.0.2",
     "fork-ts-checker-webpack-plugin": "1.5.0",
-    "node-sass": "4.13.0",
+    "node-sass": "4.13.1",
     "optimize-css-assets-webpack-plugin": "5.0.3",
     "patch-package": "6.2.0",
     "path": "0.12.7",