Added support for Laravel 7.x

Author: shreyapramanik

composer.json

@@ -17,14 +17,14 @@
         }
     ],
     "require": {
-        "php": "^7.2",
-        "illuminate/routing": "^5.7|^6.0",
-        "illuminate/support": "^5.7|^6.0",
-        "lavary/laravel-menu": "^1.7"
+        "php": "^7.4",
+        "illuminate/routing": "^5.7|^6.0|^7.0",
+        "illuminate/support": "^5.7|^6.0|^7.0",
+        "lavary/laravel-menu": "^1.8"
     },
     "require-dev": {
         "phpunit/phpunit" : ">=5.4.3",
-        "squizlabs/php_codesniffer": "^2.3"
+        "squizlabs/php_codesniffer": "^3.7"
     },
     "autoload": {
         "files": [