Upgrade phpstan/phpstan to at least 0.12.10 and enable
bleeding edge configuration to be able to run the phpstan
analysis with all available cpu cores.

Releases: master
Resolves: #90378
Change-Id: I4c76a8f44c570b126844d1bde96998cf9d3790fa
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63253


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>