remove laravel 6 support as the package doesn't function for laravel 6 anymore

Author: andreaselia

composer.json

@@ -29,11 +29,11 @@
     "require": {
         "php": "^7.4|^8.0",
         "ext-json": "*",
-        "illuminate/config": "^6.0|^7.0|^8.0|^9.0|^10.0|^11.0",
-        "illuminate/console": "^6.0|^7.0|^8.0|^9.0|^10.0|^11.0",
-        "illuminate/contracts": "^6.0|^7.0|^8.0|^9.0|^10.0|^11.0",
-        "illuminate/support": "^6.0|^7.0|^8.0|^9.0|^10.0|^11.0",
-        "illuminate/routing": "^6.0|^7.0|^8.0|^9.0|^10.0|^11.0",
+        "illuminate/config": "^7.0|^8.0|^9.0|^10.0|^11.0",
+        "illuminate/console": "^7.0|^8.0|^9.0|^10.0|^11.0",
+        "illuminate/contracts": "^7.0|^8.0|^9.0|^10.0|^11.0",
+        "illuminate/support": "^7.0|^8.0|^9.0|^10.0|^11.0",
+        "illuminate/routing": "^7.0|^8.0|^9.0|^10.0|^11.0",
         "phpstan/phpdoc-parser": "^1.26"
     },
     "extra": {