StsAssumeRoleWithWebIdentityCredentialsProvider does not call refreshRequest

### Describe the bug

I am using StsAssumeRoleWithWebIdentityCredentialsProvider to assume an AWS role using a token created on Azure AD/Entra. When the AWS token expires, it will get a new token as long as the WebIdentityToken from Entra has not expired. Once the WebIdentityToken expires, the next refresh to get an AWS token results in an ExpiredTokenException.

### Regression Issue

- [ ] Select this option if this issue appears to be a regression.

### Expected Behavior

When refreshing the AWS token, I expected refreshRequest to be called, which would update the WebIdentityToken. However, it is not called.

### Current Behavior

s.a.a.s.s.m.ExpiredTokenException: Token expired: current date/time 1731098245 must be before the expiration date/time 1731095240 (Service: Sts, Status Code: 400, Request ID: 22679931-6a1d-4db3-abd0-a189de181809)
at s.a.a.c.i.h.CombinedResponseHandler.handleErrorResponse(CombinedResponseHandler.java:125)
at s.a.a.c.i.h.CombinedResponseHandler.handleResponse(CombinedResponseHandler.java:82)
at s.a.a.c.i.h.CombinedResponseHandler.handle(CombinedResponseHandler.java:60)
at s.a.a.c.i.h.CombinedResponseHandler.handle(CombinedResponseHandler.java:41)
at s.a.a.c.i.h.p.s.HandleResponseStage.execute(HandleResponseStage.java:50)
at s.a.a.c.i.h.p.s.HandleResponseStage.execute(HandleResponseStage.java:38)
at s.a.a.c.i.h.p.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at s.a.a.c.i.h.p.s.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:74)
at s.a.a.c.i.h.p.s.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:43)
at s.a.a.c.i.h.p.s.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:79)
at s.a.a.c.i.h.p.s.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:41)
at s.a.a.c.i.h.p.s.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:55)
at s.a.a.c.i.h.p.s.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:39)
at s.a.a.c.i.h.p.s.RetryableStage2.executeRequest(RetryableStage2.java:93)
at s.a.a.c.i.h.p.s.RetryableStage2.execute(RetryableStage2.java:56)
at s.a.a.c.i.h.p.s.RetryableStage2.execute(RetryableStage2.java:36)
at s.a.a.c.i.h.p.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at s.a.a.c.i.h.StreamManagingStage.execute(StreamManagingStage.java:53)
at s.a.a.c.i.h.StreamManagingStage.execute(StreamManagingStage.java:35)
at s.a.a.c.i.h.p.s.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:82)
at s.a.a.c.i.h.p.s.Api...

### Reproduction Steps

Following is the config class (springboot) that creates the `StsAssumeRoleWithWebIdentityCredentialsProvider` bean.

```
@Configuration
@Slf4j
class AwsAssumeRoleConfig {

@Value("${application.aws-role-session-duration}")
private int sessionDuration;
@Value("${application.aws-assumed-role-arn}")
private String assumedRoleArn;

@Bean
StsAssumeRoleWithWebIdentityCredentialsProvider assumeRoleWithWebIdentityCredentialsProvider(
StsClient stsClient, EntraTokenProvider entraTokenProvider) {
String sessionName = "cct-" + UUID.randomUUID().toString();
log.info("Creating StsAssumeRole provider for role: {} with session name {} with duration {}",
assumedRoleArn, sessionName,
sessionDuration);

return StsAssumeRoleWithWebIdentityCredentialsProvider.builder()
.stsClient(stsClient)
.asyncCredentialUpdateEnabled(true)
.refreshRequest(assumeRoleRequest -> {
log.info("entra token requested for assume role");
OAuth2AccessToken token = entraTokenProvider.getAccessToken();
if (log.isDebugEnabled()) {
log.debug("Token received from entra: {}***********",
token.getTokenValue().substring(0, 5));
} else {
log.info("Token received from entra, length {}", token.getTokenValue().length());
}
assumeRoleRequest.webIdentityToken(token.getTokenValue());
assumeRoleRequest.roleArn(assumedRoleArn);
assumeRoleRequest.roleSessionName(sessionName);
assumeRoleRequest.durationSeconds(sessionDuration);
})
.build();
}

@SuppressWarnings("java:S6242")
@Bean
StsClient stsClient() {
return StsClient.builder()
.region(Region.CA_CENTRAL_1)

.build();
}
}
```

### Possible Solution

_No response_

### Additional Information/Context

Dependencies are:

implementation 'org.springframework.cloud:spring-cloud-stream-binder-kinesis:4.0.4'
implementation 'org.apache.httpcomponents.client5:httpclient5'
implementation 'software.amazon.awssdk:kinesis:2.29.1'
implementation 'software.amazon.awssdk:dynamodb:2.29.1'
implementation 'software.amazon.awssdk:cloudwatch:2.29.1'
implementation 'software.amazon.awssdk:sts:2.29.1'
implementation 'org.springframework.security:spring-security-oauth2-client'
implementation 'com.azure.spring:spring-cloud-azure-stream-binder-eventhubs:5.17.1'
implementation 'com.google.protobuf:protobuf-java:4.28.3'

### AWS Java SDK version used

2.29.1

### JDK version used

OpenJDK Runtime Environment Temurin-21.0.5+11 (build 21.0.5+11-LTS)

### Operating System and version

Oracle Linux Server 8.10