[MacPorts] #29518: Updated swi-prolog-devel portfile for version 5.11.21

[MacPorts]

#29518: Updated swi-prolog-devel portfile for version 5.11.21
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 Reporter:  pmoura@…             |       Owner:  macports-tickets@…                   
     Type:  update               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.2                                
 Keywords:  haspatch maintainer  |        Port:  swi-prolog-devel                     
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 Updated swi-prolog-devel portfile for version 5.11.21.

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Ticket URL: <https://trac.macports.org/ticket/29518>
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