[TASK] Bump typo3/testing-framework ^8.2.0

> composer req --dev typo3/testing-framework:^8.2.0

A minor release upgrade of TF needs minor
type hint adaptions to keep phpstan happy.

Resolves: #104212
Releases: 12.4
Change-Id: I1af6f9eca81962719878fa56394520897a6fa01e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84922


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>