[MacPorts] #53291: astyle @2.05.1: update to 3.0

[MacPorts]

#53291: astyle @2.05.1: update to 3.0
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  Reporter:  l2dy    |      Owner:  wyuenho
      Type:  update  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  astyle  |
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Comment (by mf2k):

 @wyuenho: Actually, you are the listed maintainer. {{{openmaintainer}}}
 simply allows other to commit minor changes without your consent. Since
 you don't use it anymore, it would be best to change it to
 {{{nomaintainer}}}.

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Ticket URL: <https://trac.macports.org/ticket/53291#comment:5>
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