[TASK] Release version 2.3.0

Upload version 2.3.0 to TER.

Resolves: #57899
Releases: 2.3
Change-Id: Iedd86bf8cfb0ceb00dd7a15c389a1d1211583426
Reviewed-on: https://review.typo3.org/29982
Reviewed-by: Francois Suter
Tested-by: Francois Suter