[MacPorts] #30189: udunits2: update to 2.1.23

[MacPorts]

#30189: udunits2: update to 2.1.23
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 Reporter:  ryandesign@…             |       Owner:  takeshi@…           
     Type:  update                   |      Status:  new                 
 Priority:  Normal                   |   Milestone:                      
Component:  ports                    |     Version:                      
 Keywords:                           |        Port:  udunuts2            
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 udunits2 should probably be updated to 2.1.23.

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Ticket URL: <https://trac.macports.org/ticket/30189>
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