Add janitors to the OWNERS file am: be74f41134

Original change: https://android-review.googlesource.com/c/platform/external/cblas/+/3423506

Change-Id: Ibc89e7d5571ad86ef779014507b35eee4fa3f612
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>