package:mockito v5.4.5

• Ignore "must_be_immutable" warning in generated files. Mocks cannot be made
  immutable anyway, but this way users aren't prevented from using generated
  mocks altogether.
• Require Dart SDK ^3.6.0.
• Require analyzer: '>=6.9.0 <8.0.0'.
• Require dart_style: '>=2.3.7 <4.0.0', so that the current Dart language
  version can be passed to DartFormatter.
• Require source_gen: ">=1.4.0 <3.0.0".
• Add support for extension types.
• Add topics to pubspec.yaml.
• Fix a bug where type aliases in type arguments were not correctly
  resolved.
• Fix a bug where record types were not correctly resolved.