[MacPorts] #35403: update tmux-pasteboard to v1.1

[MacPorts]

#35403: update tmux-pasteboard to v1.1
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 Reporter:  macports@…             |       Owner:  macports-tickets@…                   
     Type:  update                 |      Status:  new                                  
 Priority:  Normal                 |   Milestone:                                       
Component:  ports                  |     Version:  2.1.2                                
 Keywords:                         |        Port:  tmux-pasteboard                      
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 v1.1 does not warn when run on Mountain Lion.

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Ticket URL: <https://trac.macports.org/ticket/35403>
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