Use secure TLS/SSL versions:

TLS1.2 can be used instead, it is available in all currently
supported versions of OpenSSL.

Signed-off-by: Damian Jarek <damian.jarek93@gmail.com>

example/websocket/client/sync-ssl/websocket_client_sync_ssl.cpp

@@ -55,7 +55,7 @@ int main(int argc, char** argv)
         net::io_context ioc;
 
         // The SSL context is required, and holds certificates
-        ssl::context ctx{ssl::context::sslv23_client};
+        ssl::context ctx{ssl::context::tlsv12_client};
 
         // This holds the root certificate used for verification
         load_root_certificates(ctx);