[TASK] Release version 1.8.0

Upload version 1.8.0 to TER.

Resolves: #58670
Releases: 1.8
Change-Id: Ic7693ab89a66f4d7360f1391d17458e78ef0db1c
Reviewed-on: https://review.typo3.org/29987
Reviewed-by: Francois Suter
Tested-by: Francois Suter