chore: change code owners
-# These owners will be the default owners for everything in
-# the repo. Unless a later match takes precedence,
-# @global-owner1 and @global-owner2 will be requested for
-# review when someone opens a pull request.
-* @jmorel @inalgnu @samlesu @Esadruhn @Fabien-GELUS @louishulot @ThibaultFy @oleobal @Milouu @guilhem-barthes
+* @Substra/code-owners
