[MacPorts] #56741: py-virtualenv: latest version is 16.0.0

[MacPorts]

#56741: py-virtualenv: latest version is 16.0.0
----------------------------+--------------------------------
  Reporter:  josephsacco    |      Owner:  (none)
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.5.2
Resolution:                 |   Keywords:  python, virtualenv
      Port:  py-virtualenv  |
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Changes (by josephsacco):

 * Attachment "Portfile.diff" added.

 Portfile diff for version update

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Ticket URL: <https://trac.macports.org/ticket/56741>
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