Update typing allowing get_port to select any available port randomly

[fizyk]

No description provided.

[codecov]

Codecov Report

Merging #28 (a94da7a) into master (81572c5) will increase coverage by 7.42%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
+ Coverage   89.62%   97.05%   +7.42%     
==========================================
  Files           8        8              
  Lines         270      272       +2     
==========================================
+ Hits          242      264      +22     
+ Misses         28        8      -20     

Flag	Coverage Δ
linux	90.07% <100.00%> (+0.44%)	⬆️
macos	96.32% <100.00%> (?)

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Impacted Files	Coverage Δ
src/port_for/api.py	97.46% <ø> (+1.26%)	⬆️
tests/test_cases.py	100.00% <100.00%> (ø)
src/port_for/ephemeral.py	91.17% <0.00%> (+55.88%)	⬆️

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