azure-iot-sdk: Fix connection timeout

A connection timeout may happen on CS310 with RTX depending on the
power of the machine running the FVP.
This timeout appear while a TLS connection is being established.
A patch to azure sources to increase the timeout dealine fixes
that issue.

Signed-off-by: Vincent Coubard <vincent.coubard@arm.com>
Signed-off-by: Hugues Kamba-Mpiana <hugues.kambampiana@arm.com>