Correct python version support metadata

[ethanwharris]

What does this PR do?

Fixes #1351

Note: The README won't update until we make a release

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[codecov]

Codecov Report

Merging #1367 (29845ea) into master (0ae31c8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1367   +/-   ##
=======================================
  Coverage   91.56%   91.56%           
=======================================
  Files         286      286           
  Lines       12814    12814           
=======================================
  Hits        11733    11733           
  Misses       1081     1081           

Flag	Coverage Δ
unittests	91.56% <ø> (ø)

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Impacted Files	Coverage Δ
flash/text/question_answering/model.py	92.51% <0.00%> (-1.37%)	⬇️
flash/text/question_answering/collate.py	97.64% <0.00%> (+2.35%)	⬆️

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