In TLS v1.2, It was possible to disable server certificate validation simply by using
API 'mbedtls_ssl_conf_authmode'. But this behaviour is changed in TLS v1.3. We can not
disable server certificate validation in TLS v1.3 using this API anymore.
For more details, refer https://github.com/Mbed-TLS/mbedtls/issues/7075
While using esp_wifi_set_config, flag pmf_capable defaults to 0.
Users may not bother to enable it, which prevents connection to a
WPA3 AP. Or the AP may reset into WPA3 mode failing the re-connection.
To ensure better security, deprecate the pmf_capable flag and set it to
true internally.
