[MacPorts] #61801: opencv4: update to 4.5.0

[MacPorts]

#61801: opencv4: update to 4.5.0
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 Reporter:  mascguy  |      Owner:  stromnov
     Type:  update   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  opencv4
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 If possible, let's also eliminate the conflict with opencv at the same
 time: issue:60118

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Ticket URL: <https://trac.macports.org/ticket/61801>
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