Update CI Workflows

[cgarciae]

Changes

• Updates testing and release workflows
• Adds coverage and pytest-cov dependencies

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@a402f3f). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master       #8   +/-   ##
=========================================
  Coverage          ?   89.92%           
=========================================
  Files             ?        6           
  Lines             ?      645           
  Branches          ?        0           
=========================================
  Hits              ?      580           
  Misses            ?       65           
  Partials          ?        0           

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