Fix gcore

[mrqwer88]

Switch to official gcore client library, to fix errors

 118804 2026/07/09 12:37:22 API returned non-200 status: 422 422 Unprocessable Entity
 118804 2026/07/09 12:37:22 Response body: {"detail":[{"type":"model_attributes_type","loc":["body"],"msg":"Input should be a valid dictionary or object to extract fields from","input":"{\"announce\":\"1.2.3.0/24\",\"enabled\":true}"}]}