[MacPorts] #63040: kerberos5: depend on python39 instead of python38

[MacPorts]

#63040: kerberos5: depend on python39 instead of python38
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  Reporter:  FaradayLight  |      Owner:  ryandesign
      Type:  enhancement   |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  arm64 bigsur
      Port:  kerberos5     |
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Comment (by reneeotten):

 see [https://github.com/macports/macports-ports/pull/11196 this PR]

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Ticket URL: <https://trac.macports.org/ticket/63040#comment:3>
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