Limit azure-cosmos<4.6.0

[eladkal]

azure-cosmos version 4.6.0 released today and it breaks mypy

airflow/providers/microsoft/azure/hooks/cosmos.py:228: error: Argument
"partition_key" to "create_container" of "DatabaseProxy" has incompatible type
"Optional[str]"; expected "PartitionKey"  [arg-type]
                    collection_name, partition_key=partition_key
                                                   ^~~~~~~~~~~~~
airflow/providers/microsoft/azure/hooks/cosmos.py:339: error: Argument
"partition_key" to "delete_item" of "ContainerProxy" has incompatible type
"Optional[str]"; expected
"Union[str, int, float, bool, Sequence[Union[str, int, float, bool, None]], Type[NonePartitionKeyValue]]"
 [arg-type]
                .delete_item(document_id, partition_key=partition_key)
                                                        ^~~~~~~~~~~~~
airflow/providers/microsoft/azure/hooks/cosmos.py:358: error: Argument
"partition_key" to "read_item" of "ContainerProxy" has incompatible type
"Optional[str]"; expected
"Union[str, int, float, bool, Sequence[Union[str, int, float, bool, None]], Type[NonePartitionKeyValue]]"
 [arg-type]
                    .read_item(document_id, partition_key=partition_key)
                                                          ^~~~~~~~~~~~~
Found 3 errors in 1 file (checked [122](https://github.com/apache/airflow/actions/runs/8291950812/job/22692722738?pr=38048#step:6:123)8 source files)
Error 1 returned