[TASK] Raise phpunit/phpunit and webmozart/assert

These raises fix the bulk of PHP 8.2 unit test
fails.

We need to make webmozart/assert:^1.11.0 explicit
to pin it as minimum version for PHP 8.2
composer update --prefer-lowest in nightlies.

We don't strictly need the phpunit raise, but
pick it as casual dev update along the way.

$ composer require --dev phpunit/phpunit:^9.5.21
$ composer require --dev webmozart/assert:^1.11.0

Resolves: #97967
Releases: master, 11.5
Change-Id: I5c79a8577c5eb836566cb5c00bb6b63aa1b7ea1f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75241


Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>