[IMP] pos_six: Upgrade TIM JavaScript SDK

Upgrade the TIM JavaScript SDK to the latest version (4.6.0).
The version Six gave us initially (3.8.1) didn't return any error
message. We now have some (ugly) error messages that could at least
help the cashier understand where the problem comes from (e.g.
"timCommunicationFailure", "cardholderStop", etc.).

closes odoo/odoo#52181

Taskid: 2267818
Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>