Bump sass-embedded from 1.59.3 to 1.60.0 in /ext/sass

Bumps [sass-embedded](https://github.com/sass/embedded-host-node) from 1.59.3 to 1.60.0.
- [Release notes](https://github.com/sass/embedded-host-node/releases)
- [Changelog](https://github.com/sass/embedded-host-node/blob/main/CHANGELOG.md)
- [Commits](sass/embedded-host-node@1.59.3...1.60.0)

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

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

ext/sass/package.json

@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "sass-embedded": "1.59.3"
+    "sass-embedded": "1.60.0"
   }
 }