Update local_auth_darwin CODEOWNERS (#10074)

Add @okorohelijah to CODEOWNERs.

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Author: jmagman

CODEOWNERS

@@ -92,7 +92,7 @@ packages/google_sign_in/google_sign_in_ios/**                 @LongCatIsLooong
 packages/image_picker/image_picker_ios/**                     @vashworth @louisehsu
 packages/image_picker/image_picker_macos/**                   @vashworth @louisehsu
 packages/in_app_purchase/in_app_purchase_storekit/**          @louisehsu @LongCatIsLooong
-packages/local_auth/local_auth_darwin/**                      @vashworth
+packages/local_auth/local_auth_darwin/**                      @vashworth @okorohelijah
 packages/path_provider/path_provider_foundation/**            @vashworth
 packages/pointer_interceptor/pointer_interceptor_ios/**       @louisehsu @hellohuanlin
 packages/quick_actions/quick_actions_ios/**                   @LongCatIsLooong @hellohuanlin