[MacPorts] #33686: etch: Update to 3.20.0

[MacPorts]

#33686: etch: Update to 3.20.0
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 Reporter:  jheiss@…             |       Owner:  ryandesign@…           
     Type:  update               |      Status:  assigned               
 Priority:  Normal               |   Milestone:                         
Component:  ports                |     Version:                         
 Keywords:  haspatch maintainer  |        Port:  etch                   
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Comment(by jheiss@…):

 Sorry, bug in the 3.20.0 release.  Updated diff advances to 3.20.1.

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Ticket URL: <https://trac.macports.org/ticket/33686#comment:4>
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