Bump marshmallow from 3.12.2 to 3.16.0

[serhiy-storchaka]

No description provided.

[codecov]

Codecov Report

Merging #281 (518b144) into master (5db462c) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #281   +/-   ##
=======================================
  Coverage   79.63%   79.63%           
=======================================
  Files          12       12           
  Lines        2190     2190           
  Branches      290      290           
=======================================
  Hits         1744     1744           
  Misses        397      397           
  Partials       49       49           

Flag	Coverage Δ
integration	79.63% <100.00%> (ø)

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Impacted Files	Coverage Δ
platform_neuro_flow_api/api.py	84.02% <ø> (ø)
platform_neuro_flow_api/schema.py	96.04% <100.00%> (ø)

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