Bump mockito from 5.3.2 to 5.4.0

Bumps [mockito](https://github.com/dart-lang/mockito) from 5.3.2 to 5.4.0.
- [Release notes](https://github.com/dart-lang/mockito/releases)
- [Changelog](https://github.com/dart-lang/mockito/blob/master/CHANGELOG.md)
- [Commits](dart-lang/mockito@5.3.2...5.4.0)

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

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

Author: dependabot[bot]

pubspec.lock

@@ -665,7 +665,7 @@ packages:
       name: mockito
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.3.2"
+    version: "5.4.0"
   multi_select_flutter:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -68,7 +68,7 @@ dev_dependencies:
   build_runner: ^2.3.3
   flutter_launcher_icons: ^0.11.0
   json_serializable: ^6.6.1
-  mockito: ^5.3.2
+  mockito: ^5.4.0
   network_image_mock: ^2.1.1
   flutter_lints: ^2.0.1
   cider: ^0.1.4