Fixed query client leaks

Author: alex268

jdbc/src/main/java/tech/ydb/jdbc/context/YdbContext.java

@@ -154,6 +154,7 @@ public YdbOperationProperties getOperationProperties() {
     public void close() {
         try {
             schemeClient.close();
+            queryClient.close();
             tableClient.close();
             grpcTransport.close();
         } catch (Exception e) {