info: fix authenticated mode repo to show "Encrypted: No", fixes #6462

src/borg/archiver.py

@@ -1471,7 +1471,7 @@ class Archiver:
             json_print(info)
         else:
             encryption = 'Encrypted: '
-            if key.NAME == 'plaintext':
+            if key.NAME in ('plaintext', 'authenticated'):
                 encryption += 'No'
             else:
                 encryption += 'Yes (%s)' % key.NAME