[MacPorts] #35939: pHash: update to 0.9.4

[MacPorts]

#35939: pHash: update to 0.9.4
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 Reporter:  ryandesign@…             |       Owner:  ivan@…           
     Type:  update                   |      Status:  new              
 Priority:  Normal                   |   Milestone:                   
Component:  ports                    |     Version:  2.1.2            
 Keywords:  haspatch                 |        Port:  pHash            
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 This patch updates pHash to 0.9.4. May I commit it? CImg should be updated
 to 1.5.1 first; see #35937.

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Ticket URL: <https://trac.macports.org/ticket/35939>
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