Drop support for EOL Python 3.6 and test 3.11 beta

[hugovk]

I didn't add the Trove classifier for 3.11 because it's still in beta, but as this is a pure Python project we probably could add now?

[codecov[bot]]

Codecov Report

Merging #163 (75ba003) into master (cc3c431) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #163   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          764       764           
  Branches       186       170   -16     
=========================================
  Hits           764       764           

Impacted Files	Coverage Δ
jsonmodels/parsers.py	100.00% <ø> (ø)
jsonmodels/validators.py	100.00% <ø> (ø)
jsonmodels/builders.py	100.00% <100.00%> (ø)
jsonmodels/models.py	100.00% <100.00%> (ø)
jsonmodels/utilities.py	100.00% <100.00%> (ø)

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[hugovk]

I didn't add the Trove classifier for 3.11 because it's still in beta

Added it now, 3.11 is in final RC with full release out in a week or two!

https://peps.python.org/pep-0664/

[beregond]

That was quick :smile:

[beregond]

@hugovk thanks for help! These changes are now available in version 2.6.0 :rocket: