Merge branch 'feature/yg/meego-6781565239-body-empty-sign-handler' into 'integration_2025-10-23_1072456537858'

feat: [development task] feature/yg/meego-6781565239-body-empty-sign-handler (1759941)

See merge request iaasng/volcengine-python-sdk!872

Author: BitsAdmin

volcenginesdkcore/interceptor/interceptors/sign_request_interceptor.py

@@ -39,7 +39,7 @@ def update_params_for_auth(host, path, method, headers, querys, auth_settings, b
 
         for auth in auth_settings:
             headers["Host"] = host
-            if method in ["POST", "PUT", "DELETE", "PATCH"]:
+            if method in ["POST", "PUT", "DELETE", "PATCH"] and body is not None:
                 body = json.dumps(body)
             else:
                 body = ""