[MacPorts] #62165: graphviz: Update to 2.46.0

[MacPorts]

#62165: graphviz: Update to 2.46.0
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  Reporter:  jarrodmillman             |      Owner:  ryandesign
      Type:  update                    |     Status:  accepted
  Priority:  Normal                    |  Milestone:
 Component:  ports                     |    Version:
Resolution:                            |   Keywords:
      Port:  graphviz, graphviz-devel  |
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Comment (by szhorvat):

 I am very much looking forward to seeing a recent Graphviz in MacPorts. I
 hope this will happen soon.

 And yes, including a native version of the GUI is important (I use it
 regularly).

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Ticket URL: <https://trac.macports.org/ticket/62165#comment:26>
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