Maintainers.txt: Update maintainers list
Update maintainers.txt to add Igor from AMI
as the reviewer of RedfishPkg.
Signed-off-by: Abner Chang <abner.chang@amd.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Nickle Wang <nickle@csie.io>
Cc: Igor Kulchytskyy <igork@ami.com>