build(ruby): Verify Ruby gem

[Stranger6667]

Fixes #394

[codspeed-hq]

CodSpeed Performance Report

Merging #480 will not alter performance

_{Comparing dd/fix-ruby-package (42c5e83) with master (6a78db6)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.05%. Comparing base (6a78db6) to head (42c5e83).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #480   +/-   ##
=======================================
  Coverage   88.05%   88.05%           
=======================================
  Files          18       18           
  Lines        1993     1993           
=======================================
  Hits         1755     1755           
  Misses        238      238           

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