Bump min supported vfsstream to 1.6.11 for php 8.2 support

Author: craig410

composer.json

@@ -24,7 +24,7 @@
   },
   "require-dev": {
     "johnkary/phpunit-speedtrap": "^3.3",
-    "mikey179/vfsstream": "^1.6.10",
+    "mikey179/vfsstream": "^1.6.11",
     "phpunit/phpunit": "^9.5.5"
   },
   "support": {