[MacPorts] #40772: plplot: upgrade to 5.9.10 or revbump

[MacPorts]

#40772: plplot: upgrade to 5.9.10 or revbump
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 Reporter:  mojca@…  |      Owner:  takeshi@…
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  plplot
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 Please upgrade plplot to 5.9.10 or increase the revision to account for
 the wxWidgets-3.0 upgrade.

 Another weird things seems to be the livecheck which reports:
 {{{
 plplot seems to have been updated (port version: 5.9.9, new version:
 5.3.0)
 }}}
 so maybe that needs to be looked at as well.

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Ticket URL: <https://trac.macports.org/ticket/40772>
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