From `man gpg`:
> --secret-keyring file
> This is an obsolete option and ignored. All secret keys are stored in
> the ‘private-keys-v1.d’ directory below the GnuPG home directory.
Change-Id: I1178c3d4a1aafa10e058db15d293b906ea402a05
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4807
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>