Log Message:
devel/ruby-mixlib-authentication: update to 3.0.6

Update ruby-mixlib-authentication to 3.0.6.

3.0.6 (2019-12-30)

* Test on Ruby 2.7 + random testing improvements #51 (tas50)
* Substitute require for require_relative #52 (tas50)

3.0.4 (2019-10-31)

* Add BuildKite PR Testing #47 (tas50)
* Update project owner + Remove Travis CI #48 (tas50)
* Update mixlib-log requirement from ~> 2 to ~> 3 #50 (dependabot-preview[bot])

3.0.1 (2019-04-23)

* remove hashrocket syntax #40 (lamont-granquist)
* Update testing boilerplate #41 (tas50)
* Update codeowners and add github PR template #43 (tas50)
* Only ship the required libraries in the gem artifact #44 (tas50)
* update travis, drop ruby < 2.5, major version bump #45 (lamont-granquist)
* Add back Ruby 2.4 support / update testing #46 (tas50)