Update composer.json

Author: thorewi

composer.json

@@ -11,7 +11,7 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": "^7.1",
+        "php": "^7.1|^8.0",
         "nette/mail": "~3.0",
         "nette/di": "^2.3 || ~3.0",
         "tracy/tracy": "^2.3",