azure-cli's setup.py lists both pydocumentdb, which is deprecated and out of support in August this year, and its newly renamed replacement azure-cosmos as dependencies:

https://github.com/Azure/azure-cli/blob/dev/src/azure-cli/setup.py#L61
https://github.com/Azure/azure-cli/blob/dev/src/azure-cli/setup.py#L138

https://pypi.org/project/pydocumentdb/
https://pypi.org/project/azure-cosmos/

Are both of them really required at the same time?