Update composer.json

Author: bhavingajjar

composer.json

@@ -19,7 +19,7 @@
     ],
     "require": {
         "php": "^7.2",
-        "illuminate/support": "5.8.*|^6.*|^7.*"
+        "illuminate/support": "5.8.*|^6.0|^7.0"
     },
     "require-dev": {
         "orchestra/testbench": "3.8.*",