chore(deps): update dependency phpunit/phpunit to v12

Author: renovate[bot]

composer.json

@@ -61,7 +61,7 @@
     "psr/log": "~1.1|~2.0|~3.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "~9|~10",
+    "phpunit/phpunit": "12.1.6",
     "squizlabs/php_codesniffer": "3.13.0",
     "overtrue/phplint": "9.6.2",
     "phpstan/phpstan": "1.12.25"