[MacPorts] #42749: autogen: update to 5.18.2

[MacPorts]

#42749: autogen: update to 5.18.2
--------------------------+---------------------
 Reporter:  ryandesign@…  |      Owner:  mww@…
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  autogen
--------------------------+---------------------
 Consider updating autogen to the latest version:

 {{{
 $ port livecheck autogen
 autogen seems to have been updated (port version: 5.17.4, new version:
 5.18.2)
 }}}

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Ticket URL: <https://trac.macports.org/ticket/42749>
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