Update dependency phpunit/phpunit to v12

Author: renovate[bot]

Diff for: ics-collector/debugger/composer.json

@@ -10,6 +10,6 @@
     ],
     "require": {},
     "require-dev": {
-        "phpunit/phpunit": "4.8.36"
+        "phpunit/phpunit": "12.1.0"
     }
 }