[MacPorts] #58127: iso-codes: move to Debian Gitlab repo, update to latest version 4.2

[MacPorts]

#58127: iso-codes: move to Debian Gitlab repo, update to latest version 4.2
---------------------+------------------------
 Reporter:  dbevans  |      Owner:  ryandesign
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  iso-codes
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 Current homepage and master-sites appear to be defunct.

 See https://salsa.debian.org/iso-codes-team/iso-codes

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Ticket URL: <https://trac.macports.org/ticket/58127>
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