add support for laravel 10 (#12)

Author: zpwparsons

composer.json

@@ -13,8 +13,8 @@
     ],
     "require": {
         "php": ">=7.2",
-        "illuminate/notifications": "^7.0|^8.0|^9.0",
-        "illuminate/support": "^7.0|^8.0|^9.0",
+        "illuminate/notifications": "^7.0|^8.0|^9.0|^10.0",
+        "illuminate/support": "^7.0|^8.0|^9.0|^10.0",
         "sendgrid/sendgrid": "^7.11|^8.0"
     },
     "require-dev": {