Bump sass from 1.77.4 to 1.77.6 (#1233)

Bumps [sass](https://github.com/sass/dart-sass) from 1.77.4 to 1.77.6.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.77.4...1.77.6)

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

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

package.json

@@ -17,7 +17,7 @@
     "esbuild": "^0.21.4",
     "govuk-frontend": "^4.7.0",
     "puppeteer": "^22.11.2",
-    "sass": "^1.77.4",
+    "sass": "^1.77.6",
     "stimulus-reveal-controller": "^4.1.0"
   }
 }

yarn.lock

@@ -5494,7 +5494,7 @@ __metadata:
     esbuild: ^0.21.4
     govuk-frontend: ^4.7.0
     puppeteer: ^22.11.2
-    sass: ^1.77.4
+    sass: ^1.77.6
     stimulus-reveal-controller: ^4.1.0
   languageName: unknown
   linkType: soft
@@ -10315,16 +10315,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"sass@npm:^1.77.4":
-  version: 1.77.4
-  resolution: "sass@npm:1.77.4"
+"sass@npm:^1.77.6":
+  version: 1.77.6
+  resolution: "sass@npm:1.77.6"
   dependencies:
     chokidar: ">=3.0.0 <4.0.0"
     immutable: ^4.0.0
     source-map-js: ">=0.6.2 <2.0.0"
   bin:
     sass: sass.js
-  checksum: 415d76960e35d78310ffc33bc61fdb2b35a54bb2823dfc4eff50eee960096dacc210d7ef7ae6695120e1a4f005f269719c34d58c77c54ff7787516bda6a89e55
+  checksum: 9bd1cb9ec1f10b7df83ed6a4b3d8764fe9174ee422f1ea21c51bcd953f710deee57c649269f9cb1ad1e9dcc3b87efee62cd2b36aca9cc646d44fd9179300d5f3
   languageName: node
   linkType: hard