Add janitors to the OWNERS file am: f5c567ff5c

Original change: https://android-review.googlesource.com/c/platform/external/piex/+/3423979

Change-Id: Idd96f78f19151c8b6ee4529d0d26baea0138aa61
Signed-off-by: Automerger Merge Worker <[email protected]>