[MacPorts] #55677: gate port dependency root5 not supported under High Sierra

[MacPorts]

#55677: gate port dependency root5 not supported under High Sierra
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 Reporter:  mlewis1973  |      Owner:
     Type:  update      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.4.2
 Keywords:              |       Port:  gate
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 please update gate port to use root6

 --->  Fetching distfiles for root5
 Error: root5 is not supported on macOS 10.13 or newer. Please migrate to
 ROOT6.
 Error: Failed to fetch root5: Unsupported OSX version

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Ticket URL: <https://trac.macports.org/ticket/55677>
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