[MacPorts] #48217: openssh @6.8p1_0: update to 6.9p1, remove ANL mirrors

[MacPorts]

#48217: openssh @6.8p1_0: update to 6.9p1, remove ANL mirrors
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  Reporter:  dluke@…  |      Owner:  macports-tickets@…
      Type:  update   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.3.3
Resolution:           |   Keywords:  haspatch
      Port:  openssh  |
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Comment (by larryv@…):

 According to #48219, the +gsskex variant is broken with 6.9p1.

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Ticket URL: <https://trac.macports.org/ticket/48217#comment:4>
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