[TASK] Update ext:styleguide to 9.0.0

The v9/master branch of styleguide generates correct
page localizations of styleguide demo data pages in
table pages instead of pages_language_overlay.

Change-Id: I1186f421cb4c5f05e508d19e60b9a580a7c3d5dc
Resolves: #82952
Related: #82445
Releases: master
Reviewed-on: https://review.typo3.org/54592


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>