[MacPorts] #58841: Update Qt5 ports to Qt 5.13

[MacPorts]

#58841: Update Qt5 ports to Qt 5.13
----------------------+---------------------------------
 Reporter:  pmetzger  |      Owner:  MarcusCalhoun-Lopez
     Type:  defect    |     Status:  assigned
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  Qt5
----------------------+---------------------------------
 Qt 5.13 was released a couple of months ago; it would be good to update
 the MacPorts packages that are currently at 5.12.4

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Ticket URL: <https://trac.macports.org/ticket/58841>
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