[OSGeo] #3052: Upgrade pretalx to latest version

[OSGeo]

#3052: Upgrade pretalx to latest version
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 Reporter:  robe      |       Owner:  sac@…
     Type:  task      |      Status:  closed
 Priority:  normal    |   Milestone:  Sysadmin Contract 2024-I
Component:  SysAdmin  |  Resolution:  fixed
 Keywords:            |
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Changes (by robe):

 * status:  new => closed
 * resolution:   => fixed

Comment:

 Done with upgrade.  Now talks.osgeo.org is at preltalx version 2024.1.

 I didn't switch the database to postgresql, but did upgrade from MySQL 5
 to MySQL 8 as is needed to run 2024.1.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3052#comment:6>
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