Add Laravel 7.0 support

Author: stevebauman

composer.json

@@ -8,7 +8,7 @@
         "php": ">=7.2",
         "ext-ldap": "*",
         "directorytree/ldaprecord": "^1.0",
-        "illuminate/support": "^5.6|^6.0"
+        "illuminate/support": "^5.6|^6.0|^7.0"
     },
     "require-dev": {
         "mockery/mockery": "~1.0",