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
'google-cloud-tasks>=2.0.0,<3.0.0',
    'google-cloud-texttospeech>=0.4.0,<2.0.0',
    'google-cloud-translate>=1.5.0,<2.0.0',
    'google-cloud-videointelligence>=1.7.0,<2.0.0',
    'google-cloud-vision>=0.35.2,<2.0.0',
    'google-cloud-workflows>=0.1.0,<2.0.0',
    'grpcio-gcp>=0.2.2',
    'httpx',
    'json-merge-patch~=0.2',
    
    
    'pandas-gbq<0.15.0',
]
grpc = [
    'google-auth>=1.0.0, <3.0.0',
    'google-auth-httplib2>=0.0.1',
    'grpcio>=1.15.0',
]
hashicorp = [
    'hvac~=0.10',
]
hdfs = [
    'snakebite-py3',
]
hive = [
    'hmsclient>=0.1.0',
    'pyhive[hive]>=0.6.0;python_version<"3.9"',
    'thrift>=0.9.2',
]
http = [