[MacPorts] #31273: sitemap_gen update to 1.5

[MacPorts]

#31273: sitemap_gen update to 1.5
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 Reporter:  and.damore@…             |       Owner:  mstokely@…         
     Type:  defect                   |      Status:  new                
 Priority:  Normal                   |   Milestone:                     
Component:  ports                    |     Version:  2.0.3              
 Keywords:  haspatch                 |        Port:  sitemap_gen        
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Comment(by and.damore@…):

 I retabbed the Portfile as well.

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Ticket URL: <https://trac.macports.org/ticket/31273#comment:1>
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