[MacPorts] #65718: zsh: install failure for macOS 13 beta 5

[MacPorts]

#65718: zsh: install failure for macOS 13 beta 5
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  Reporter:  David-Noble-at-work  |      Owner:  larryv
      Type:  defect               |     Status:  accepted
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.7.99
Resolution:                       |   Keywords:  ventura
      Port:  zsh                  |
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Comment (by larryv):

 Yeah, I'm reluctant to depend on `groff`, although at least it wouldn't
 impact binary installations.

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Ticket URL: <https://trac.macports.org/ticket/65718#comment:6>
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