[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:  new
 Priority:  normal    |   Milestone:  Sysadmin Contract 2023-I
Component:  SysAdmin  |  Resolution:
 Keywords:            |
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Comment (by robe):

 Looks like now pretalx supports PostgreSQL as a database platform and is
 now stated as the preferred platform instead of MySQL/mariaDb.

 I'm having a bit of difficulty building the new docker images for these,
 so will take a bit of time for me to resolve.

 It's mostly an issue with adding in the extensions we are using.
 Also for some reason I got an error some application error trying to pull
 the 2023.1.3/latest base image from docker hub:


 {{{
 failed to register layer: ApplyLayer exit status 1 stdout:  stderr: lchown
 /pretalx/src/pretalx/frontend/schedule-editor/node_modules/character-
 parser/.npmignore: invalid argument
 }}}


  so I ended up rebuilding from the github docker-repo.  That seemed to
 work fine, so it's just the pretalx-pages and public-voting extension I'm
 struggling with.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3052#comment:1>
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