MAINTAINERS: rmnet: Update email addresses

Switch to oss.qualcomm.com ids.

Signed-off-by: Sean Tranchetti <sean.tranchetti@oss.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subash.a.kasiviswanathan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250826215046.865530-1-subash.a.kasiviswanathan@oss.qualcomm.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>