Allow for Laravel 8+

Changed dependency to >= so that I don't have to revisit on every Laravel upgrade since I only use the servcie provider.

Author: edgrosvenor

composer.json

@@ -13,7 +13,7 @@
     "prefer-stable": true,
     "require": {
         "php": "^7.4",
-        "illuminate/support": "^7.0",
+        "illuminate/support": ">=7.0",
         "ext-json": "*",
         "ext-mysqli": "*",
         "titasgailius/terminal": "^0.3.0"