wolfssl: update to 4.4.0-stable

wolfssl: update to 4.4.0-stable

This version adds many bugfixes, including a couple of security
vulnerabilities:
 - For fast math (enabled by wpa_supplicant option), use a constant time
   modular inverse when mapping to affine when operation involves a
   private key - keygen, calc shared secret, sign.
 - Change constant time and cache resistant ECC mulmod. Ensure points
   being operated on change to make constant time.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
(cherry picked from commit 3481f6ffc79f46fc7ba86a4cc15ad958e99b5a82)