[MacPorts] #50671: boost: Update to 1.62.0

[MacPorts]

#50671: boost: Update to 1.62.0
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  Reporter:  eborisch@…  |      Owner:  ryandesign
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:  haspatch
      Port:  boost       |
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Comment (by akimd):

 So what should end users, like me, do to get a recent Boost?

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Ticket URL: <https://trac.macports.org/ticket/50671#comment:23>
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