Bump sass from 1.75.0 to 1.77.8

Bumps [sass](https://github.com/sass/dart-sass) from 1.75.0 to 1.77.8.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.75.0...1.77.8)

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

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

package.json

@@ -4,7 +4,7 @@
   "dependencies": {
     "esbuild": "^0.21.4",
     "govuk-frontend": "^5.4.0",
-    "sass": "^1.75.0"
+    "sass": "^1.77.8"
   },
   "scripts": {
     "build:css": "sass ./app/assets/stylesheets/main.scss:./app/assets/builds/main.css --no-source-map --load-path=node_modules --quiet-deps",

yarn.lock

@@ -261,10 +261,10 @@ readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
-sass@^1.75.0:
-  version "1.75.0"
-  resolved "https://registry.yarnpkg.com/sass/-/sass-1.75.0.tgz#91bbe87fb02dfcc34e052ddd6ab80f60d392be6c"
-  integrity sha512-ShMYi3WkrDWxExyxSZPst4/okE9ts46xZmJDSawJQrnte7M1V9fScVB+uNXOVKRBt0PggHOwoZcn8mYX4trnBw==
+sass@^1.77.8:
+  version "1.77.8"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.77.8.tgz#9f18b449ea401759ef7ec1752a16373e296b52bd"
+  integrity sha512-4UHg6prsrycW20fqLGPShtEvo/WyHRVRHwOP4DzkUrObWoWI05QBSfzU71TVB7PFaL104TwNaHpjlWXAZbQiNQ==
   dependencies:
     chokidar ">=3.0.0 <4.0.0"
     immutable "^4.0.0"