build(deps): bump mockito from 5.4.2 to 5.4.4

Bumps [mockito](https://github.com/dart-lang/mockito) from 5.4.2 to 5.4.4.
- [Release notes](https://github.com/dart-lang/mockito/releases)
- [Changelog](https://github.com/dart-lang/mockito/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dart-lang/mockito/commits)

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

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

pubspec.yaml

@@ -29,7 +29,7 @@ dev_dependencies:
   test: ^1.24.0
   collection: ^1.16.0
   quiver: ^3.2.2
-  mockito: 5.4.2
+  mockito: 5.4.4
   build_runner: 2.4.9
   built_collection: ^5.1.1
   tuple: ^2.0.2