Add janitors to the OWNERS file am: 33bed53c03

Original change: https://android-review.googlesource.com/c/platform/external/caliper/+/3423566

Change-Id: Ia75d16fccc4ce91315efd8cfb25ba2a8e77a32de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>