[MacPorts] #51849: Update qpdf to 6.0.0

[MacPorts]

#51849: Update qpdf to 6.0.0
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  Reporter:  wyuenho@…  |      Owner:  dojo@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  qpdf       |
------------------------+--------------------
Changes (by mf2k@…):

 * owner:  macports-tickets@… => dojo@…
 * version:  2.3.4 =>
 * port:   => qpdf


Comment:

 In the future, please fill in the Port field and Cc the port maintainers
 ({{{port info --maintainers qpdf}}}), if any.

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Ticket URL: <https://trac.macports.org/ticket/51849#comment:1>
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