Merge pull request #15 from ShawnCZek/update-dependencies

Update dependencies to support their latest versions

Author: bensherred

composer.json

@@ -37,7 +37,7 @@
         {
             "name": "ShawnCZek",
             "email": "[email protected]",
-            "homepage": "https://truckersmp.com/",
+            "homepage": "https://github.com/shawnczek",
             "role": "Maintainer"
         }
     ],
@@ -50,9 +50,9 @@
         "guzzlehttp/psr7": "^1.6"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0",
-        "squizlabs/php_codesniffer": "3.*",
-        "php-http/guzzle6-adapter": "^1.0"
+        "phpunit/phpunit": "^8.0 || ^9.0",
+        "squizlabs/php_codesniffer": "^3.0",
+        "php-http/guzzle6-adapter": "^1.0 || ^2.0"
     },
     "autoload": {
         "psr-4": {