gnus-cloud-synced-files

gnus-cloud-synced-files is a variable defined in `gnus-cloud.el'.
Its value is

("~/.authinfo.gpg" "~/.gnus.el"
 (:directory "~/News" :match ".*.SCORE\\'"))

Documentation:
List of file regexps that should be kept up-to-date via the cloud.

You can customize this variable.