Issue micronaut-projects#605 - stop attempting to inject SdkAsyncHttp…

…Client when the async http clients have been explicitly excluded from the build

aws-sdk-v2/src/main/java/io/micronaut/aws/sdk/v2/service/dynamodb/DynamoDbClientFactory.java

@@ -18,6 +18,7 @@
 import io.micronaut.aws.sdk.v2.service.AwsClientFactory;
 import io.micronaut.context.annotation.Bean;
 import io.micronaut.context.annotation.Factory;
+import io.micronaut.context.annotation.Requires;
 import software.amazon.awssdk.auth.credentials.AwsCredentialsProviderChain;
 import software.amazon.awssdk.http.SdkHttpClient;
 import software.amazon.awssdk.http.async.SdkAsyncHttpClient;
@@ -73,13 +74,15 @@ public DynamoDbClient syncClient(DynamoDbClientBuilder builder) {
 
     @Override
     @Singleton
+    @Requires(beans = SdkAsyncHttpClient.class)
     public DynamoDbAsyncClientBuilder asyncBuilder(SdkAsyncHttpClient httpClient) {
         return super.asyncBuilder(httpClient);
     }
 
     @Override
     @Bean(preDestroy = "close")
     @Singleton
+    @Requires(beans = SdkAsyncHttpClient.class)
     public DynamoDbAsyncClient asyncClient(DynamoDbAsyncClientBuilder builder) {
         return super.asyncClient(builder);
     }