Fix a panic when `auths: null` is found in the CLI config file.
full diff: https://github.com/docker/cli/compare/v24.0.4...v24.0.5
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit ab4585f38c)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>