MAINTAINERS: mailmap: update Alexey Klimov's email address

My new address is alexey.klimov@linaro.org

Link: https://lkml.kernel.org/r/20241008132353.68767-1-alexey.klimov@linaro.org


Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>