[MacPorts] #43730: gource: update to 0.42

[MacPorts]

#43730: gource: update to 0.42
--------------------------+--------------------
 Reporter:  ryandesign@…  |      Owner:  phw@…
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  gource
--------------------------+--------------------
 gource should probably be updated:

 {{{
 $ port livecheck gource
 Gource seems to have been updated (port version: 0.41, new version: 0.42)
 }}}

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Ticket URL: <https://trac.macports.org/ticket/43730>
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