[MacPorts] #66554: py-mutagen: add Python 3.11

[MacPorts]

#66554: py-mutagen: add Python 3.11
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 Reporter:  radarhere    |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  py-mutagen
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 If a Python 3.11 subport could be added to py-mutagen, that would be good.

 Testing, I find that it works with py-mutagen on GitHub Actions -
 https://github.com/quodlibet/mutagen/pull/589

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Ticket URL: <https://trac.macports.org/ticket/66554>
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