Bump v2 API docs version 2.256.0

Author: ari-wg-gitbot

docs/v2/info/get_info.html

@@ -103,7 +103,7 @@ <h4>Body</h4>
   "token_endpoint": "http://localhost:8080/uaa",
   "min_cli_version": null,
   "min_recommended_cli_version": null,
-  "api_version": "2.255.0",
+  "api_version": "2.256.0",
   "app_ssh_endpoint": "ssh.system.domain.example.com:2222",
   "app_ssh_host_key_fingerprint": "47:0d:d1:c8:c3:3d:0a:36:d1:49:2f:f2:90:27:31:d0",
   "app_ssh_oauth_client": null,