[floss] Update OWNERS

Bug: None
Change-Id: Id3751f99e01e889925c3fda32c7604771aab68d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4396209
Commit-Queue: Michael Sun <michaelfsun@google.com>
Auto-Submit: Abhishek Pandit-Subedi <abhishekpandit@google.com>
Reviewed-by: Michael Sun <michaelfsun@google.com>
Cr-Commit-Position: refs/heads/main@{#1125639}

device/bluetooth/floss/OWNERS

@@ -1,5 +1,6 @@
 abhishekpandit@chromium.org
+laikatherine@chromium.org
 mcchou@chromium.org
-michaelfsun@chromium.org
+michaelfsun@google.com
 sonnysasaka@chromium.org
 yinghsu@chromium.org