Update CODEOWNERS (opensearch-project#668) (opensearch-project#670)

Issue Resolve
opensearch-project#305


(cherry picked from commit 57d6bc8)

Signed-off-by: Anan Zhuang <ananzh@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.github/CODEOWNERS

@@ -1,2 +1 @@
-# This should match the owning team set up in https://github.com/orgs/opensearch-project/teams
-*   @opensearch-project/oui
+*   @seanneumann @AMoo-Miki @rednaksi91 @KrooshalUX @BSFishy @bandinib-amzn