[OSGeo] #2822: Upgrade tracsvn to bullseye

[OSGeo]

#2822: Upgrade tracsvn to bullseye
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 Reporter:  robe              |       Owner:  sac@…
     Type:  task              |      Status:  new
 Priority:  normal            |   Milestone:  Sysadmin Contract 2024-I
Component:  SysAdmin          |  Resolution:
 Keywords:  gitea, trac, svn  |
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Comment (by strk):

 For the record: upgrade to Bookworm will give us access to Trac-1.6 via
 backports, see #3238
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2822#comment:7>
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