Bump uuid from 3.0.7 to 4.0.0 in /experimental/web_dashboard

Bumps [uuid](https://github.com/Daegalus/dart-uuid) from 3.0.7 to 4.0.0.
- [Release notes](https://github.com/Daegalus/dart-uuid/releases)
- [Changelog](https://github.com/daegalus/dart-uuid/blob/main/CHANGELOG.md)
- [Commits](daegalus/dart-uuid@3.0.7...4.0.0)

---
updated-dependencies:
- dependency-name: uuid
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

experimental/web_dashboard/pubspec.yaml

@@ -20,7 +20,7 @@ dependencies:
   json_annotation: ^4.5.0
   path: ^1.8.1
   provider: ^6.0.0
-  uuid: ^3.0.0
+  uuid: ^4.0.0
 
 dev_dependencies:
   build_runner: ^2.1.0