Disable bean method proxying in SpringBootJdbcConfiguration

Closes gh-22231

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/jdbc/JdbcRepositoriesAutoConfiguration.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -61,7 +61,7 @@ public class JdbcRepositoriesAutoConfiguration {
 
 	}
 
-	@Configuration
+	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnMissingBean({ AbstractJdbcConfiguration.class, JdbcConfiguration.class })
 	static class SpringBootJdbcConfiguration extends AbstractJdbcConfiguration {