Upgrade webargs to address security flaw

[adelavega]

No description provided.

[codecov-io]

Codecov Report

Merging #516 into master will decrease coverage by 0.03%.
The diff coverage is 80%.

@@            Coverage Diff            @@
##           master    #516      +/-   ##
=========================================
- Coverage   84.84%   84.8%   -0.04%     
=========================================
  Files          38      38              
  Lines        1557    1560       +3     
=========================================
+ Hits         1321    1323       +2     
- Misses        236     237       +1

Impacted Files	Coverage Δ
neuroscout/resources/utils.py	81.25% <80%> (-0.72%)	⬇️

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