[TASK] Doctrine: Migrate WorkspacesNotificationSettingsUpdate

Change-Id: If49df1f82e1571c0c9c40806734dd7486fc22335
Resolves: #77520
Releases: master
Reviewed-on: https://review.typo3.org/49519


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>