iwlwifi: bump FW API to 65 for AX devices

Start supporting API version 65 for AX devices.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210819183728.1cb15b015485.I2818924b772d7518f4d9fc38b4caab3494ab11f9@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>