[MacPorts] #48524: qt5-mac upgrade to 5.5.0

[MacPorts]

#48524: qt5-mac upgrade to 5.5.0
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  Reporter:  eirnym@…  |      Owner:  mcalhoun@…
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  qt5-mac   |
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Comment (by mdeaudelin@…):

 This is a duplicate of #48252, but that other bug does not include a
 patch. There is some discussion over there regarding the changes in Qt
 5.5, which explains why we're still at 5.4.2 at this time.

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Ticket URL: <https://trac.macports.org/ticket/48524#comment:2>
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