[MacPorts] #29711: Upgrade sbt port from 0.7.4 to 0.7.7

[MacPorts]

#29711: Upgrade sbt port from 0.7.4 to 0.7.7
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 Reporter:  msa@…          |       Owner:  macports-tickets@…                   
     Type:  update         |      Status:  new                                  
 Priority:  Normal         |   Milestone:                                       
Component:  ports          |     Version:                                       
 Keywords:  haspatch       |        Port:  sbt                                  
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 Attached patch updates the sbt Portfile to sbt 0.7.7

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Ticket URL: <https://trac.macports.org/ticket/29711>
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