update dependencies to fix security vulnerability

[edaniszewski]

fixes #208

[codecov]

Codecov Report

Merging #210 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #210   +/-   ##
=======================================
  Coverage   82.76%   82.76%           
=======================================
  Files          44       44           
  Lines        1300     1300           
=======================================
  Hits         1076     1076           
  Misses        224      224

Impacted Files	Coverage Δ
synse/__init__.py	100% <100%> (ø)	⬆️

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