[MacPorts] #52404: Update gnucash ports to use webkit2-gtk

[MacPorts]

#52404: Update gnucash ports to use webkit2-gtk
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 Reporter:  jeremyhu@…  |      Owner:  devans@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  gnucash gnucash-devel
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 Please update gnucash and gnucash-devel to use webkit2-gtk rather than
 webkit-gtk.

 The older version of webkit-gtk hasn't been supported upstream for quite
 some time and is full of vulnerabilities.

 See #52398

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Ticket URL: <https://trac.macports.org/ticket/52404>
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