Merge branch 'BB-codeowners' into 'master'

Big Bang Bot: Update CODEOWNERS

Closes #1998

See merge request !4163

CODEOWNERS

-# default codeowners/project maintainers
-* @ryan.thompson.44 @ryan.j.garcia @chris.oconnell @michaelmartin
-
-# documentation codeowners/maintainers 
-/docs/ @aperkins @ryan.thompson.44 @ryan.j.garcia @chris.oconnell @michaelmartin
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+* @michaelmartin @chris.oconnell @ryan.thompson.44 @ryan.j.garcia
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