[MacPorts] #35021: Update R* ports to 2.15.1

[MacPorts]

#35021: Update R* ports to 2.15.1
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 Reporter:  kjell.konis@…         |       Owner:  macports-tickets@…                   
     Type:  update                |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  2.1.1                                
 Keywords:  maintainer, haspatch  |        Port:  R, R-framework, R-app                
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 In addition to updating the version, I also changed my email address.

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Ticket URL: <https://trac.macports.org/ticket/35021>
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