chore(dependencies): switch to go mod

[mstruebing]

No description provided.

[codecov-io]

Codecov Report

Merging #47 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #47   +/-   ##
=======================================
  Coverage   66.66%   66.66%           
=======================================
  Files           3        3           
  Lines         174      174           
=======================================
  Hits          116      116           
  Misses         33       33           
  Partials       25       25

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