Release v1.40.50 (2021-09-27)
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### Service Client Updates
* `service/appintegrations`: Updates service API and documentation
* `service/connect`: Updates service API and documentation
* `service/elasticloadbalancingv2`: Updates service API and documentation
* `service/pinpoint`: Updates service API and documentation
  * Added support for journey with contact center activity
* `service/voice-id`: Updates service API, documentation, paginators, and examples
* `service/wisdom`: Updates service API, documentation, paginators, and examples