Release 8.3.0

[ryonakano]

TODO:

• meson: Replace join_path with intuitive slash #213
• Update translation template #214
• Bump GNOME runtime to 50 #237
• metainfo: Update release notes for 8.3.0 #239
• Wait for a few days for translation updates
• CI fails to push artifacts to the flatpak-api server #238
• Wait for new release of icons that fixes symbolic icons

[danirabbit]

We also have a problem that it seems the GNOME 49 runtime introduces a regression with cursor sizes on our version of Mutter. I'm not sure we have a path forward on that yet

[ryonakano]

We also have a problem that it seems the GNOME 49 runtime introduces a regression with cursor sizes on our version of Mutter. I'm not sure we have a path forward on that yet

Just leaving a note for other and future developers to refer #220 (comment) for this discussion

[ryonakano]

CI for the last commit is not triggered because it doesn't modify the manifest file, but we can check if instead here:

https://github.com/elementary/flatpak-platform/actions/runs/26032705082

[teamcons]

Because of the bump to 50, maybe also wait for all the symbolics repairing?
This one is still up: elementary/icons#1423

else 8.3 will have this elementary/icons#1420