[MacPorts] #30699: meld: update python dependencies to 2.7

[MacPorts]

#30699: meld: update python dependencies to 2.7
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 Reporter:  ecronin@…             |       Owner:  landonf@…           
     Type:  enhancement           |      Status:  new                 
 Priority:  Normal                |   Milestone:                      
Component:  ports                 |     Version:  2.0.1               
 Keywords:  haspatch              |        Port:  meld                
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Ticket URL: <https://trac.macports.org/ticket/30699>
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