mailmap: update email address for Claudiu Beznea

Claudiu Beznea's Microchip email address is no longer valid.
Map it to a valid one.

Link: https://lkml.kernel.org/r/20231030063632.1707372-1-claudiu.beznea@tuxon.dev


Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: Bjorn Andersson <quic_bjorande@quicinc.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>