MAINTAINERS: BPF ARC JIT: Update my e-mail address

The previous e-mail address from Synopsys is not available anymore.

Signed-off-by: Shahab Vahedi <list+bpf@vahedi.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240909184754.27634-1-list+bpf@vahedi.org