Bump sass from 1.26.5 to 1.26.8 (#14078)

Bumps [sass](https://github.com/sass/dart-sass) from 1.26.5 to 1.26.8.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.26.5...1.26.8)

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

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

package.json

@@ -151,7 +151,7 @@
     "requestidlecallback": "^0.3.0",
     "reselect": "^4.0.0",
     "rimraf": "^3.0.2",
-    "sass": "^1.26.5",
+    "sass": "^1.26.8",
     "sass-loader": "^8.0.2",
     "stacktrace-js": "^2.0.2",
     "stringz": "^2.1.0",