Move OWNER reference master=>main. am: 7e4ca8bd03 am: 37b85ac4f2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/threadpool/+/2661052

Change-Id: I6a0947972ac271b3d967a82f0212731c40f06215
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>