Bump sass-loader from 11.0.1 to 12.6.0 (#326)

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 11.0.1 to 12.6.0.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/sass-loader/compare/v11.0.1...v12.6.0)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -70,7 +70,7 @@
     "mini-css-extract-plugin": "^2.5.3",
     "path-browserify": "^1.0.1",
     "sass": "^1.49.7",
-    "sass-loader": "^11.0.1",
+    "sass-loader": "^12.6.0",
     "stream-browserify": "^3.0.0",
     "style-loader": "^2.0.0",
     "url": "^0.11.0",