[MacPorts] #57812: baresip: update to 0.6.0

[MacPorts]

#57812: baresip: update to 0.6.0
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 Reporter:  alfredh  |      Owner:  (none)
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  baresip
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 update baresip to 0.6.0

 also enable sdl2 module

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Ticket URL: <https://trac.macports.org/ticket/57812>
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