Add compat for symfony/http-client==4.3

Author: 0xIbra

composer.json

@@ -19,6 +19,6 @@
         "php": ">=7.1.3",
         "ext-curl": "*",
         "ext-json": "*",
-        "symfony/http-client": ">=4.4"
+        "symfony/http-client": ">=4.3.0"
     }
 }