chore(deps): update dependency phpstan/phpstan to v1.10.15

Author: renovate[bot]

composer.json

@@ -22,7 +22,7 @@
     "nyholm/psr7": "^1.5",
     "phpbench/phpbench": "^1.2",
     "phpstan/extension-installer": "^1.1",
-    "phpstan/phpstan": "1.10.14",
+    "phpstan/phpstan": "1.10.15",
     "phpstan/phpstan-phpunit": "1.3.11",
     "phpstan/phpstan-strict-rules": "1.5.1",
     "phpunit/phpunit": "^9.5",