Bump sass from 1.55.0 to 1.56.0

Bumps [sass](https://github.com/sass/dart-sass) from 1.55.0 to 1.56.0.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.55.0...1.56.0)

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

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

package.json

@@ -39,7 +39,7 @@
     "mixin-deep": "^2.0.1",
     "node-sass": "^7.0.3",
     "regenerator-runtime": "^0.13.10",
-    "sass": "^1.55.0",
+    "sass": "^1.56.0",
     "set-value": "^4.1.0"
   },
   "resolutions": {