chore(deps): bump sass from 1.99.0 to 1.100.0 in /tests/apps/multi

Bumps [sass](https://github.com/sass/dart-sass) from 1.99.0 to 1.100.0.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.99.0...1.100.0)

---
updated-dependencies:
- dependency-name: sass
  dependency-version: 1.100.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

tests/apps/multi/package.json

@@ -2,7 +2,7 @@
   "author": "Al Johri",
   "dependencies": {
     "bootstrap": "^5.3.8",
-    "sass": "^1.99.0"
+    "sass": "^1.100.0"
   },
   "description": "Test application for heroku multi buildpack.",
   "engines": {