Add janitors to the OWNERS file am: 0a30c48a46 am: 74272bbd50

Original change: https://android-review.googlesource.com/c/platform/external/testng/+/3423325

Change-Id: I0bfc22b2748b12c70a1ddd15e3a6462002bda923
Signed-off-by: Automerger Merge Worker <[email protected]>