message: java: Fix cross language aead test.
diff: @@ -117,7 +117,7 @@ public final class AwsKmsClient implements KmsClient {
  this.client =
  AWSKMSClientBuilder.standard()
  .withCredentials(provider)
  - .withRegion(Regions.fromName(tokens[3]))
  + .withRegion(Regions.fromName(tokens[4]))
  .build();
  return this;
  } catch (AmazonServiceException e) {
  