Sets proxyBeanMethods = false on test config

Author: spencergibb

core/spring-cloud-stream-test-binder/src/main/java/org/springframework/cloud/stream/binder/test/TestChannelBinderConfiguration.java

@@ -45,7 +45,7 @@
  * @author Soby Chacko
  * @see TestChannelBinder
  */
-@Configuration
+@Configuration(proxyBeanMethods = false)
 @ConditionalOnMissingBean(Binder.class)
 @Import(BinderFactoryAutoConfiguration.class)
 @EnableIntegration