ssh provider has limit to sshtunnel  < 0.2
https://github.com/apache/airflow/blob/9d6ae609b60449bd274c2f96e72486d73ad2b8f9/setup.py#L451

I don't know why? sshtunnel  already released 0.4
I didn't open PR because I don't know this provider i just tried to install it and couldn't due to conflicts with other requirements in my system so eventually i used vitrual env to solve my problem but logging this issue so that someone who knows this code can handle it.
setup.py
atlas = [
    'atlasclient>=0.1.2',
]
azure = [
    'azure-batch>=8.0.0',
    'azure-cosmos>=4.0.0,<5',
    'azure-datalake-store>=0.0.45',
    'azure-identity>=1.3.1',
    'azure-keyvault>=4.1.0',
    'azure-kusto-data>=0.0.43,<0.1',
    'azure-mgmt-containerinstance>=1.5.0,<2.0',
    'azure-mgmt-datafactory>=1.0.0,<2.0',
    'azure-mgmt-datalake-store>=0.5.0',
    'azure-mgmt-resource>=2.2.0',
    
    'azure-storage-blob>=12.7.0,<12.9.0',
    'azure-storage-common>=2.1.0',
    'azure-storage-file>=2.1.0',
]
cassandra = [
    'cassandra-driver>=3.13.0,<4',
]
celery = [
    'celery~=5.1,>=5.1.2',
    'flower~=1.0.0',
]
cgroups = [
    'cgroupspy>=0.1.4',
]
cloudant = [