Add janitors to the OWNERS file am: e48fdec187

Original change: https://android-review.googlesource.com/c/platform/external/squashfs-tools/+/3423317

Change-Id: I4f7839bc09eb2e95dc85c16bdda5920b04c1030f
Signed-off-by: Automerger Merge Worker <[email protected]>