Fix incorrect latest development release

release.toml stores the last version that was actually *released*,
which, as of right now, is v2023dev1, not v2023dev2. As these values are
used for the downloads page, the development release download links
there are all currently broken.

https://phabricator.apertis.org/T8593



Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>