Bump gopkg.in/yaml.v2 from 2.2.8 to 2.3.0

Bumps [gopkg.in/yaml.v2](https://github.com/go-yaml/yaml) from 2.2.8 to 2.3.0.
- [Release notes](https://github.com/go-yaml/yaml/releases)
- [Commits](https://github.com/go-yaml/yaml/compare/v2.2.8...v2.3.0)

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