Mark different PHP versions to be conflicting to be in line with other repositories.

Author: rutgerrademaker

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": "^7.1|^8.0",
+        "php": "^7.1 || ^8.0",
         "composer-plugin-api": "^1.0 || ^2.0"
     },
     "require-dev": {