Issue #3475916 by spokje, catch, longwave: Bump phpstan/phpstan to 1.12.4 to make daily "updated deps" QA run pass again

Author: longwave

composer.json

@@ -23,7 +23,7 @@
         "php-http/guzzle7-adapter": "^1.0",
         "phpspec/prophecy-phpunit": "^2",
         "phpstan/extension-installer": "^1.1",
-        "phpstan/phpstan": "^1.11.10",
+        "phpstan/phpstan": "^1.12.4",
         "phpstan/phpstan-phpunit": "^1.3.16",
         "phpunit/phpunit": "^9.6.13",
         "symfony/browser-kit": "^6.4",