Add kubernetes-sig members to org.yaml

Maintainers of inference-perf https://github.com/kubernetes-sigs/inference-perf and kubernetes-sigs members

achandrasekar kubernetes#5369
jjk-g kubernetes#5214
SachinVarghese kubernetes#5467

kubernetes/k8s.io#9267 (comment)

Author: jjk-g

config/kubernetes/org.yaml

@@ -32,6 +32,7 @@ members:
 - abdurrehman107
 - Abirdcfly
 - abursavich
+- achandrasekar
 - Adarsh-verma-14
 - adilGhaffarDev
 - adinilfeld
@@ -478,6 +479,7 @@ members:
 - jimmidyson
 - Jimmykhangnguyen
 - jingxu97
+- jjk-g
 - jkaniuk
 - jkh52
 - jklaw90
@@ -896,6 +898,7 @@ members:
 - rytswd
 - s-urbaniak
 - saad-ali
+- SachinVarghese
 - saikat-royc
 - sairameshv
 - sajibAdhi