[TASK] Release version 1.4.0

Upload version 1.4.0 to TER.

Resolves: #58679
Releases: 1.4
Change-Id: I733da9fa7f96affe38b5d0bc78cd325bf80b637f
Reviewed-on: https://review.typo3.org/29989
Reviewed-by: Francois Suter
Tested-by: Francois Suter