Fix dropping upper bound constrain for requires python

[marcelotrevisani]

No description provided.

[codecov-commenter]

Codecov Report

Merging #400 (91b2be7) into main (9c3242e) will increase coverage by 0.75%.
The diff coverage is 92.90%.

@@            Coverage Diff             @@
##             main     #400      +/-   ##
==========================================
+ Coverage   91.30%   92.06%   +0.75%     
==========================================
  Files          17       16       -1     
  Lines        1576     1701     +125     
==========================================
+ Hits         1439     1566     +127     
+ Misses        137      135       -2     

Flag	Coverage Δ
unittests	92.06% <92.90%> (+0.75%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
setup.py	0.00% <0.00%> (ø)
grayskull/base/github.py	72.83% <72.83%> (ø)
grayskull/license/discovery.py	94.81% <78.12%> (-2.33%)	⬇️
grayskull/strategy/abstract_strategy.py	83.33% <83.33%> (ø)
grayskull/__main__.py	95.60% <93.18%> (-2.55%)	⬇️
grayskull/base/factory.py	91.17% <93.33%> (+1.17%)	⬆️
grayskull/strategy/py_base.py	95.00% <95.00%> (ø)
grayskull/utils.py	98.12% <97.58%> (-1.88%)	⬇️
grayskull/strategy/pypi.py	97.68% <97.68%> (ø)
grayskull/config.py	98.48% <98.48%> (ø)
... and 7 more

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