Forcing Python minor version in EPEL builds

[Mark E. Fuller]

Hi Folks,

I am looking to update one of my packages in EPEL 8 and Python3.6 was 
dropped.
Can anyone point me in the right direction as to how to edit my spec 
file `buildrequires` and the macros to enforce Python 3.7 (or higher) 
instead of Python 3.6 anto do it "the right way", not a kludge?

Thank you,

Mark E. Fuller, Ph.D.
fuller(a)fedoraproject.org
@fuller:one.ems.host
https://mefuller.dev
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