Update OmniSharp to 1.37.1

[JoeRobich]

No description provided.

[JoeRobich]

CI - https://travis-ci.org/github/OmniSharp/omnisharp-vscode/builds/723469395

[codecov]

Codecov Report

Merging #4031 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4031   +/-   ##
=======================================
  Coverage   85.99%   85.99%           
=======================================
  Files          60       60           
  Lines        1856     1856           
  Branches      214      214           
=======================================
  Hits         1596     1596           
  Misses        200      200           
  Partials       60       60           

Flag	Coverage Δ
#unit	85.99% <ø> (ø)

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