[MacPorts] #56419: Stop using GitHub Services for Travis CI

[MacPorts]

#56419: Stop using GitHub Services for Travis CI
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  Reporter:  ryandesign      |      Owner:  admin@…
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:                  |   Keywords:
      Port:                  |
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Comment (by l2dy):

 https://docs.travis-ci.com/user/migrate/open-source-on-travis-ci-com
 /#existing-open-source-repositories-on-travis-ciorg

 > Open source projects and their build history will continue to run on
 travis-ci.org at this time.
 >
 > However, you can be included in the closed beta testing to start
 migrating your open source repositories to travis-ci.com.

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Ticket URL: <https://trac.macports.org/ticket/56419#comment:2>
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