Expand pytest github actions to all supported python versions

[VagishVela]

Is your feature request related to a problem? Please describe.
We currently test only for 3.9 while we lint for multiple versions of python.

Describe the solution you'd like
We should have a standard so we test and lint in github actions for the same versions of python.

Describe alternatives you've considered
N/A

Additional context
I don't know if we can set the python versions in one place and have github actions pull in the relevant versions so we don't need to set it in multiple places.