v1.50.2

Bug fixes and other changes

• add tests to quick canary
• honor 'wait' flag when updating endpoint
• add default framework version warning message in Model classes
• Adding role arn explanation for sagemaker role
• allow predictor to be returned from AutoML.deploy()
• add PR checklist item about unique_name_from_base()
• use unique_name_from_base for multi-algo tuning test
• update copyright year in license header

Documentation changes

• add version requirement for using "requirement.txt" when serving a PyTorch model
• add SageMaker Debugger overview
• clarify requirements.txt usage for Chainer, MXNet, and Scikit-learn
• change "associate" to "create" for OpenID connector
• fix typo and improve clarity on installing packages via "requirements.txt"