[BUGFIX] Increase size of sitemap_priority database field

The field size is increased to decimal(2,1) to be able to store
the value 1.0 zero in MariaDB databases.

Resolves: #91736
Releases: master, 10.4
Change-Id: I72aa5e5a1f23673f6912b2f042c9d9364fd9855f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64993


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Simon Vincent Ackermann <simon@hemmer.ch>
Tested-by: Eric Chavaillaz <eric@hemmer.ch>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Simon Vincent Ackermann <simon@hemmer.ch>
Reviewed-by: Eric Chavaillaz <eric@hemmer.ch>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Benni Mack <benni@typo3.org>