PR-60: Solve Guincorn security issue

[PRodriguezFlores]

• Upgraded Gunicorn version to comapt with 22.0.0

[the-label-bot]

The Label Bot has predicted the following:

Category	Value	Confidence	Applied Label
Kind	Unknown	Too Low	✖️
Size	XS	0.997	✔️

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.13%. Comparing base (8c89d96) to head (e4ff7ef).
Report is 9 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #71   +/-   ##
=======================================
  Coverage   83.13%   83.13%           
=======================================
  Files          13       13           
  Lines         753      753           
=======================================
  Hits          626      626           
  Misses        127      127           

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