Finalization: update OWNERS

Add new folks working on finalization, remove folks no longer working on
it.

Also, sort the entires alphabetically.

Bug: 323940469
Test: N/A
Change-Id: Ib8f6c3f485a06e3d1269e4142317174ae7ac276b
diff --git a/tools/finalization/OWNERS b/tools/finalization/OWNERS
index 518b60d..b00b774 100644
--- a/tools/finalization/OWNERS
+++ b/tools/finalization/OWNERS
@@ -1,5 +1,7 @@
 include platform/build/soong:/OWNERS
-smoreland@google.com
-alexbuy@google.com
+amhk@google.com
+gurpreetgs@google.com
+michaelwr@google.com
 patb@google.com
+smoreland@google.com
 zyy@google.com