Bump github.com/docker/docker-credential-helpers from 0.6.2 to 0.6.3

Bumps [github.com/docker/docker-credential-helpers](https://github.com/docker/docker-credential-helpers) from 0.6.2 to 0.6.3.
- [Release notes](https://github.com/docker/docker-credential-helpers/releases)
- [Changelog](https://github.com/docker/docker-credential-helpers/blob/master/CHANGELOG.md)
- [Commits](https://github.com/docker/docker-credential-helpers/compare/v0.6.2...v0.6.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
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