[MacPorts] #64819: Upgrade to slang2 v2.3.2 fails

[MacPorts]

#64819: Upgrade to slang2 v2.3.2 fails
-----------------------+--------------------
 Reporter:  JohnFHall  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.7.2
 Keywords:             |       Port:  slang2
-----------------------+--------------------
 {{{
 Error: Failed to fetch slang2: The requested URL returned error: 404 Not
 Found
 }}}

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Ticket URL: <https://trac.macports.org/ticket/64819>
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