[MacPorts] #57625: iTerm2: update prompts even for the latest version (3.2.5)

[MacPorts]

#57625: iTerm2: update prompts even for the latest version (3.2.5)
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 Reporter:  yan12125  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  iTerm2
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 Thanks to eborisch, MacPorts now ships the latest iTerm2. However, the
 version string of this build is 'unknown' and thus users are prompted for
 updates. See the attached screenshot.

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Ticket URL: <https://trac.macports.org/ticket/57625>
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