Job Failed #67231 / Import error for 'soft_unicode' from 'markupsafe'

Building docs is not possible for the ci repo.
Job #67231 failed for 57e294e1:

Also failed for: https://git.confirm.ch/confirm/translucent/-/pipelines/15684

Seems that in MarkupSafe:2.1.0 soft_unicode was removed.
https://github.com/aws/aws-sam-cli/issues/3661