Bump sass-loader from 13.1.0 to 13.2.0

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 13.1.0 to 13.2.0.
- [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@v13.1.0...v13.2.0)

---
updated-dependencies:
- dependency-name: sass-loader
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "postcss-loader": "7.0.1",
     "pug": "3.0.2",
     "sass": "1.56.1",
-    "sass-loader": "13.1.0",
+    "sass-loader": "13.2.0",
     "sharp": "0.31.2",
     "shelljs": "0.8.5",
     "style-loader": "3.3.1",