Update TF Sync PR reviewer (#2398)

BUG=cleanup
diff --git a/.github/workflows/sync.yml b/.github/workflows/sync.yml
index d505a9d..0c5434e 100644
--- a/.github/workflows/sync.yml
+++ b/.github/workflows/sync.yml
@@ -62,5 +62,5 @@
           author: TFLM-bot <tflm-github-bot@google.com>
           body: "BUG=automated sync from upstream\nNO_CHECK_TFLITE_FILES=automated sync from upstream"
           labels: bot:sync-tf, ci:run
-          reviewers: advaitjain
+          reviewers: rascani