[MacPorts] #57729: opencv: please update to version 4.0

[MacPorts]

#57729: opencv: please update to version 4.0
------------------------+----------------------
  Reporter:  gallafent  |      Owner:  stromnov
      Type:  update     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.4
Resolution:  fixed      |   Keywords:
      Port:  opencv     |
------------------------+----------------------
Changes (by reneeotten):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 the {{{openv4}}} port was added in [https://github.com/macports/macports-
 ports/commit/7254f30c6fbb4bd6f25535863eb9a89230a439b6 this commit] and is
 at its latest upstream version (currently 4.2.0)

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Ticket URL: <https://trac.macports.org/ticket/57729#comment:2>
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