new handle session

[alexviquez]

The last implementation had the issue of creating a session context for every request. This has been resolved by creating a Retry adapter. Thanks to @matin for the suggestion

[codecov]

Codecov Report

Merging #366 (bd175cf) into main (2447f60) will not change coverage.
The diff coverage is 100.00%.

❗ Current head bd175cf differs from pull request most recent head e543b3d. Consider uploading reports for the commit e543b3d to get more accurate results

@@            Coverage Diff            @@
##              main      #366   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           47        47           
  Lines         1082      1087    +5     
=========================================
+ Hits          1082      1087    +5     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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Files Changed	Coverage Δ
cuenca/http/client.py	100.00% <100.00%> (ø)
cuenca/version.py	100.00% <100.00%> (ø)

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