Add ext- requirements to composer.json (#76)

* add ext- requirements to composer.json

* json is also required

* json is also required

* Remove ext-json since it is always present now

* Remove ext-json since it is always present now

Author: misakstvanu

composer.json

@@ -11,6 +11,8 @@
     ],
     "require": {
         "php": ">=8.1",
+        "ext-bcmath": "*",
+        "ext-gmp": "*",
         "php-http/discovery": "^1.14",
         "psr/simple-cache": ">=1.0",
         "psr/http-factory-implementation": "1.0",