tflite: Update OWNERS

BUG=b:305999697
TEST=None

Change-Id: I6cd3e9739f0484697cbbb40b29080883722549be
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/tflite/+/5535490
Auto-Submit: Shik Chen <shik@chromium.org>
Reviewed-by: Ricky Liang <jcliang@chromium.org>
Commit-Queue: Ricky Liang <jcliang@chromium.org>
Tested-by: Shik Chen <shik@chromium.org>