MAINTAINERS: Maintainer change for rds

At this point, Santosh has moved onto other things and I am happy
to take over the role of rds maintainer. Update the MAINTAINERS
accordingly.
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Link: https://lore.kernel.org/r/20240205190343.112436-1-allison.henderson@oracle.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS

@@ -18433,7 +18433,7 @@ S:	Supported
 F:	drivers/infiniband/sw/rdmavt
 
 RDS - RELIABLE DATAGRAM SOCKETS
-M:	Santosh Shilimkar <santosh.shilimkar@oracle.com>
+M:	Allison Henderson <allison.henderson@oracle.com>
 L:	netdev@vger.kernel.org
 L:	linux-rdma@vger.kernel.org
 L:	rds-devel@oss.oracle.com (moderated for non-subscribers)