ci: Add python 3.11 to package classifiers, version pins

[tony]

No description provided.

[codecov]

Codecov Report

Merging #451 (4d75ab8) into master (4d75ab8) will not change coverage.
The diff coverage is n/a.

❗ Current head 4d75ab8 differs from pull request most recent head a3c88f8. Consider uploading reports for the commit a3c88f8 to get more accurate results

@@           Coverage Diff           @@
##           master     #451   +/-   ##
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  Coverage   87.44%   87.44%           
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  Files          20       20           
  Lines        1800     1800           
  Branches      246      246           
=======================================
  Hits         1574     1574           
  Misses        154      154           
  Partials       72       72           

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[tony]

Python 3.10.7

libtmux on  python-3.11 ❯ hyperfine --min-runs 10 --warmup 1 'py.test' --ignore-failure
Benchmark 1: py.test
  Time (mean ± σ):     11.917 s ±  0.256 s    [User: 7.379 s, System: 0.802 s]
  Range (min … max):   11.589 s … 12.505 s    10 runs

Python 3.11.0

hyperfine --min-runs 10 --warmup 1 'py.test' --ignore-failure
Benchmark 1: py.test
  Time (mean ± σ):     11.440 s ±  0.104 s    [User: 6.939 s, System: 0.713 s]
  Range (min … max):   11.289 s … 11.614 s    10 runs