Drop rspec-its dependency in favor of have_attributes

[ekohl]

No description provided.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b9ba4ec) 74.37% compared to head (7547860) 74.37%.

❗ Current head 7547860 differs from pull request most recent head b257ab9. Consider uploading reports for the commit b257ab9 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1788   +/-   ##
=======================================
  Coverage   74.37%   74.37%           
=======================================
  Files          82       82           
  Lines        4608     4608           
=======================================
  Hits         3427     3427           
  Misses       1181     1181           

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[jay7x]

JFYI, transpec has this to convert from its to RSpec 3 syntax: https://github.com/yujinakayama/transpec/blob/master/lib/transpec/syntax/its.rb

[ekohl]

I still question if the RSpec/ImplicitSubject cop makes sense.