🚨 🚨 🚨 Goodbye Python 3.8! 🚨 🚨 🚨

[muellerzr]

What does this PR do?

Updates our failing tests by bringing in python 3.9 as a minimum!

Fixes # (issue)

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• Did you write any new necessary tests?

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@SunMarc

[SunMarc]

LGTM !

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