[SAC] [OSGeo] #2886: Upgrade Weblate to 4.15.2

[OSGeo]

#2886: Upgrade Weblate to 4.15.2
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 Reporter:  robe           |      Owner:  sac@…
     Type:  task           |     Status:  new
 Priority:  normal         |  Milestone:  Sysadmin Contract 2023-I
Component:  Systems Admin  |   Keywords:
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 We are currently on 4.15.  There are a couple of crashers fixed since last
 upgrade

 changes since 4.15 are:

 4.15.1 https://github.com/WeblateOrg/weblate/releases/tag/weblate-4.15.1


     Fixed suggestions from automatic translation.
     Fixed add-on page crash in some corner cases.
     Fixed untranslating template for new translations in some cases.
     Documented licensing using REUSE 3.0.
     Fixed users pagination on team management.
     Improved performance of project creation and saving.
     Added support for gotext JSON files.
     Added support for i18next v4 files.
     Pagination in the API is now customizable.


 4.15.2 https://github.com/WeblateOrg/weblate/releases/tag/weblate-4.15.2


     Enabled gotext JSON and i18next v4 formats in the default
     configuration.
     Fixed crash on uploading corrupted files.
     Show stale directories in Git repository status.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2886>
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