[MacPorts] #55847: freecad: Update to 0.16.6712

[MacPorts]

#55847: freecad: Update to 0.16.6712
------------------------+----------------------------
 Reporter:  ryandesign  |      Owner:  mark.brethen@…
     Type:  update      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  freecad
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 > This Backport release contains bug fixes and/or security patches over
 the original 0.16.xxxx release.

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Ticket URL: <https://trac.macports.org/ticket/55847>
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