[python-committers] Is Tests / Ubuntu broken at the moment?

Hello Python Developers,

I notice TLS tests failing in the ssl test suite in master, 3.9 and 3.8 branches.

https://github.com/python/cpython/runs/2018191733

Is it to do with infrastructure, certificate? I am unable to determine it exactly. The failure is observed upon merge to master. or with 3.8, 3.9 backports of any PR.

Thank you, Senthil