Deprecated oauth2client

[LenkaSeg]

Flask-oidc is using oauth2client:
https://github.com/googleapis/oauth2client
which seems to be deprecated, reasons here:
https://google-auth.readthedocs.io/en/latest/oauth2client-deprecation.html

It would be probably a good idea to substitute oauth2client with another authentication library (maybe (authlib)[https://github.com/lepture/authlib]?)

Any proposals/ideas/comments?

@puiterwijk

[bnavigator]

Note that most recent Flask and Werkzeug have changes incompatible with legacy oauth2client

[Conan-Kudo]

Flask-OIDC development has moved to https://github.com/fedora-infra/flask-oidc

[mcepl]

What about this ticket?