Updated dependencies and added support for Laravel 8

Author: bensherred

README.md

@@ -415,3 +415,4 @@ A Steam API key must be provided or most tests will fail.
 - [JRizzle88](https://github.com/JRizzle88)
 - [jastend](https://github.com/jastend)
 - [Teakowa](https://github.com/Teakowa)
+- [Ben Sherred](https://github.com/bensherred)

composer.json

@@ -10,19 +10,19 @@
     }
   ],
   "require": {
-    "php": "^7.2.0",
-    "laravel/framework": ">=5.8.0",
-    "guzzlehttp/guzzle": "^6.0",
+    "php": "^7.3",
+    "laravel/framework": "^8.0",
+    "guzzlehttp/guzzle": "^7.0.1",
     "ext-bcmath": "*",
     "ext-simplexml": "*",
     "ext-libxml": "*",
     "ext-curl": "*",
     "ext-json": "*"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.0",
-    "orchestra/testbench": "^3.0",
-    "vlucas/phpdotenv": "^3.6"
+    "phpunit/phpunit": "^9.3",
+    "orchestra/testbench": "^6.0",
+    "vlucas/phpdotenv": "^5.2"
   },
   "autoload": {
     "psr-4": {