ApplicationTestConfig: CustomScopeConfigurer should be static

2022-09-27 14:45:13,770 WARN  [main] org.springframework.context.annotation.ConfigurationClassEnhancer: 
@Bean method ApplicationTestConfig.CustomScopeConfigurer is non-static and returns an object assignable to Spring's BeanFactoryPostProcessor interface.
This will result in a failure to process annotations such as @Autowired, @Resource and @PostConstruct within the method's declaring @Configuration class.
Add the 'static' modifier to this method to avoid these container lifecycle issues; see @Bean javadoc for complete details.