[MacPorts] #50903: swi-prolog-devel @7.3.18: update to 7.3.19

[MacPorts]

#50903: swi-prolog-devel @7.3.18: update to 7.3.19
---------------------------------+--------------------------------
 Reporter:  pmoura@…             |      Owner:  macports-tickets@…
     Type:  update               |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:
 Keywords:  haspatch maintainer  |       Port:  swi-prolog-devel
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 Update the swi-prolog-devel portfile for the latest release.

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Ticket URL: <https://trac.macports.org/ticket/50903>
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