Spring Cloud Config Cannot configure endpoint for AWS Secrets Manager or Parameter Store

Describe the bug Cannot configure endpoint for AWS Secrets Manager or Parameter Store integration. The application fails to start with the following exception

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'awsSecretsManagerEnvironmentRepository' defined in class path resource [org/springframework/cloud/config/server/config/AwsSecretsManagerRepositoryConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.config.server.environment.AwsSecretsManagerEnvironmentRepository]: Factory method 'awsSecretsManagerEnvironmentRepository' threw exception; nested exception is java.lang.IllegalStateException: Only one of Region or EndpointConfiguration may be set.
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.13.jar:5.3.13]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.13.jar:5.3.13]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:164) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.cloud.config.server.ConfigServerApplication.main(ConfigServerApplication.java:35) ~[spring-cloud-config-server-3.1.0.jar:3.1.0]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.config.server.environment.AwsSecretsManagerEnvironmentRepository]: Factory method 'awsSecretsManagerEnvironmentRepository' threw exception; nested exception is java.lang.IllegalStateException: Only one of Region or EndpointConfiguration may be set.
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.13.jar:5.3.13]
    ... 18 common frames omitted
Caused by: java.lang.IllegalStateException: Only one of Region or EndpointConfiguration may be set.
    at com.amazonaws.client.builder.AwsClientBuilder.setRegion(AwsClientBuilder.java:450) ~[aws-java-sdk-core-1.11.935.jar:na]
    at com.amazonaws.client.builder.AwsClientBuilder.configureMutableProperties(AwsClientBuilder.java:424) ~[aws-java-sdk-core-1.11.935.jar:na]
    at com.amazonaws.client.builder.AwsSyncClientBuilder.build(AwsSyncClientBuilder.java:46) ~[aws-java-sdk-core-1.11.935.jar:na]
    at org.springframework.cloud.config.server.environment.AwsSecretsManagerEnvironmentRepositoryFactory.build(AwsSecretsManagerEnvironmentRepositoryFactory.java:56) ~[spring-cloud-config-server-3.1.0.jar:3.1.0]
    at org.springframework.cloud.config.server.config.AwsSecretsManagerRepositoryConfiguration.awsSecretsManagerEnvironmentRepository(EnvironmentRepositoryConfiguration.java:438) ~[spring-cloud-config-server-3.1.0.jar:3.1.0]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.13.jar:5.3.13]
    ... 19 common frames omitted

The problem is org.springframework.cloud.config.server.environment.AwsSecretsManagerEnvironmentRepositoryFactory and org.springframework.cloud.config.server.environment.AwsParameterStoreEnvironmentRepositoryFactory do not configure the region in the AwsClientBuilder.EndpointConfiguration, as is done in org.springframework.cloud.config.server.environment.AwsS3EnvironmentRepositoryFactory

I have submitted PR #2023 to fix it

Sample

spring:
  profiles:
    active: awssecretsmanager
  cloud:
    config:
      server:
        aws-secretsmanager:
          endpoint: localhost.localstack.cloud:4566
          region: us-east-1

spring:
  profiles:
    active: awsparamstore
  cloud:
    config:
      server:
        awsparamstore:
          endpoint: localhost.localstack.cloud:4566
          region: us-east-1