Revert Back to using Guzzle Directly

Author: zanbaldwin

composer.json

@@ -22,7 +22,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",
-        "php-http/guzzle7-adapter": "^1.0",
+        "guzzlehttp/guzzle": "^7.0",
         "php-http/mock-client": "^1.0",
         "phpstan/phpstan": "^1.2",
         "phpunit/phpunit": "^8.0 || ^9.0"