[TASK] Bump PHPStan to ^1.10.9

This version of PHPStan makes some test-related methods static,
which is required for newer PHPUnit versions (where data providers
are required to be static).

Author: oliverklee

composer.json

@@ -12,7 +12,7 @@
 	"prefer-stable": true,
 	"require": {
 		"php": "^7.4 || ^8.0",
-		"phpstan/phpstan": "^1.8.9",
+		"phpstan/phpstan": "^1.10.9",
 		"nikic/php-parser": "^4.15.1",
 		"typo3/cms-core": "^10.4 || ^11.5 || ^12.4 || ^13.0",
 		"typo3/cms-extbase": "^10.4 || ^11.5 || ^12.4 || ^13.0",