Bump sass from 1.83.0 to 1.83.4 (#31)

Bumps [sass](https://github.com/sass/dart-sass) from 1.83.0 to 1.83.4.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.83.0...1.83.4)

---
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>

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "nhsuk-frontend": "^9.1.0",
     "nunjucks": "^3.2.4",
     "path": "^0.12.7",
-    "sass": "^1.83.0",
+    "sass": "^1.83.4",
     "session-file-store": "^1.5.0",
     "weighted": "^1.0.0"
   },