[MacPorts] #61801: opencv4: update to 4.5.0 (was: opencv4: update to 4.5.1)

[MacPorts]

#61801: opencv4: update to 4.5.0
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  Reporter:  mascguy  |      Owner:  mascguy
      Type:  update   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  opencv4  |
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Description changed by mascguy:

Old description:

> If possible, let's also eliminate the conflict with opencv at the same
> time: issue:60118

New description:

 If possible, let's also eliminate the conflict with opencv at the same
 time: issue:60118

 Note: Due to build errors with variant `contrib` and v4.5.1, let's start
 with v4.5.0. That will still be a major upgrade.

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Ticket URL: <https://trac.macports.org/ticket/61801#comment:5>
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