Upgrade jwilsson/oauth2-client to 4.x

Author: jwilsson

composer.json

@@ -17,7 +17,7 @@
     },
     "require": {
         "php": "^8.2",
-        "jwilsson/oauth2-client": "^3.0",
+        "jwilsson/oauth2-client": "^4.0",
         "php-http/client-common": "^2.3",
         "php-http/message": "^1.11",
         "php-http/promise": "^1.1",