[Conference-resources] [OSGeo] #3392: update pretalx to newer version

[OSGeo]

#3392: update pretalx to newer version
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 Reporter:  astrid_emde  |       Owner:  conference-resources@…
     Type:  task         |      Status:  new
 Priority:  normal       |   Milestone:  Unplanned
Component:  Pretalx      |  Resolution:
 Keywords:  pretalx      |
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Comment (by lucadelu):

 @astrid_emde with @Robe we updated to v2024.2.1. This is the maximum we
 were able to do, since from v2024.3.1 mysql support is dropped and our db
 is actually based on that.

 I hope we will work on this topic in the next weeks
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3392#comment:7>
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