Upgrade php-parser to 4.2 to enable recent features and compatibility

Author: Daniel Noel-Davies

composer.json

@@ -4,7 +4,7 @@
     "type": "package",
     "require": {
         "php": ">=7.1",
-        "nikic/php-parser": "^3.1",
+        "nikic/php-parser": "^4.2",
         "ddelnano/dredd-hooks-php": "^1.1"
     },
     "license": "MIT",