Caso apareça esta mensagem para alguém: "Because every version of flutter_test from sdk depends on test_api 0.5.1 and mockito 5.3.0 depends on test_api >=0.2.1 <0.5.0, flutter_test from sdk is incompatible with mockito 5.3.0. So, because estilizacao_componentes depends on both mockito 5.3.0 and flutter_test from sdk, version solving failed, é só apagar a versão do do mockito e rodar o pubget.