Update laravel 6 to semantic versioning scheme

Author: lloricode

composer.json

@@ -11,9 +11,9 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*",
-        "illuminate/validation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*",
-        "illuminate/translation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*"
+        "illuminate/support": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|^6.0",
+        "illuminate/validation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|^6.0",
+        "illuminate/translation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|^6.0"
     },
     "require-dev": {
         "mockery/mockery": "^1.0",