Add janitors to the OWNERS file am: 6069e2333e

Original change: https://android-review.googlesource.com/c/platform/external/bazel-skylib/+/3423052

Change-Id: I502182c0ce272117886ec7a0ce6d5ab9f72641fd
Signed-off-by: Automerger Merge Worker <[email protected]>