[MacPorts] #53477: rust @1.14.0: update to 1.15.0

[MacPorts]

#53477: rust @1.14.0: update to 1.15.0
---------------------+----------------------
  Reporter:  l2dy    |      Owner:  g5pw
      Type:  update  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  rust    |
---------------------+----------------------
Changes (by mf2k):

 * cc: g5pw (removed)
 * owner:   => g5pw
 * status:  new => assigned


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Ticket URL: <https://trac.macports.org/ticket/53477#comment:1>
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