Bump sass from 1.28.0 to 1.29.0

Bumps [sass](https://github.com/sass/dart-sass) from 1.28.0 to 1.29.0.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/master/CHANGELOG.md)
- [Commits](sass/dart-sass@1.28.0...1.29.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "node-sass": "^4.14.1",
     "pre-commit": "^1.2.2",
     "rimraf": "^3.0.2",
-    "sass": "^1.28.0",
+    "sass": "^1.29.0",
     "sass-loader": "^10.0.4",
     "stylelint": "^13.7.2",
     "vue-template-compiler": "^2.6.12"