Bump min version of nikic/php-parser to enable PHP8.1 support

Author: dvdoug

composer.json

@@ -32,7 +32,7 @@
         "ext-dom": "*",
         "ext-libxml": "*",
         "ext-xmlwriter": "*",
-        "nikic/php-parser": "^4.10.2",
+        "nikic/php-parser": "^4.12.0",
         "phpunit/php-file-iterator": "^3.0.3",
         "phpunit/php-text-template": "^2.0.2",
         "sebastian/code-unit-reverse-lookup": "^2.0.2",