chore: update CODEOWNERS

Signed-off-by: Yurii Shynbuiev <[email protected]>

.github/CODEOWNERS

@@ -1,6 +1 @@
-# These owners will be the default owners for everything in
-# the repo. Unless a later match takes precedence
-* @petevielhaber @yshyn-iohk @amagyar-iohk @bvoiturier @lohanspies @mkbreuningIOHK @Dale-iohk @elribonazo @essbante-io
-
-# Docs:
-*.md @petevielhaber
+* @hyperledger-identus/identus-maintainers