mockito

• Allow analyzer: >=8.1.0 <10.0.0.

• Require analyzer: ^8.1.0.
• Allow source_gen: '>=3.0.0 <5.0.0'.
• Allow build: '>=3.0.0 <5.0.0'.

• 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...

Release 2.2.1

Moved the default release to not contain mirrors. This is since Web and Flutter targets will not support mirrors. Mockito can still be used with mirrors, but will need to import mirrors.dart. This is only needed for the spy functionality.