Allow PHP 8

Author: mglaman

composer.json

@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": "~7.2",
+        "php": "^7.2.5|^8.0",
         "composer/xdebug-handler": "^1.3",
         "jean85/pretty-package-versions": "~1.5.0",
         "mglaman/phpstan-drupal": "^0.12.8",
@@ -26,7 +26,10 @@
         "squizlabs/php_codesniffer": "^3.4"
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "platform": {
+            "php": "7.2.5"
+        }
     },
     "bin": [
         "drupal-check"