[SAC] [OSGeo] #2456: Update repo.osgeo.org to 3.23.0

[OSGeo]

#2456: Update  repo.osgeo.org to 3.23.0
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 Reporter:  robe           |      Owner:  sac@…
     Type:  task           |     Status:  new
 Priority:  normal         |  Milestone:  Sysadmin Contract 2020-I
Component:  Systems Admin  |   Keywords:
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 Note that this is not a security patch, but does have some bug fixes we
 might find useful

 https://help.sonatype.com/repomanager3/release-notes/2020-release-notes
 #id-2020ReleaseNotes-RepositoryManager3.23.0

 I'm planning to do this in a bit.

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2456>
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