fix(IoT): Using a custom atomic dictionary for topic listeners #646

Job	Run time
validation	3s
Integration Test (AWSMobileClient)	26s
Integration Test (AWSAutoScaling)	25s
Integration Test (AWSCloudWatch)	26s
Integration Test (AWSComprehend)	23s
Integration Test (AWSCore)	26s
Integration Test (AWSDynamoDB)	25s
Integration Test (AWSEC2)	23s
Integration Test (AWSElasticLoadBalancing)	28s
Integration Test (AWSIoT)	25s
Integration Test (AWSKMS)	29s
Integration Test (AWSKinesis)	24s
Integration Test (AWSKinesisVideoSignaling)	25s
Integration Test (AWSLambda)	23s
Integration Test (AWSLex)	28s
Integration Test (AWSPinpoint)	24s
Integration Test (AWSPolly)	23s
Integration Test (AWSRekognition)	28s
Integration Test (AWSS3)	25s
Integration Test (AWSSES)	28s
Integration Test (AWSSNS)	26s
Integration Test (AWSSQS)	29s
Integration Test (AWSTextract)	27s
Integration Test (AWSTranscribe)	25s
Integration Test (AWSTranscribeStreaming)	23s
Integration Test (AWSTranslate)	23s
	10m 40s

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