Bump version to 6.7.1 to release update

What does this MR do?

We forgot to bump the version of container scanning in Upgrade `zlib1g` to `1:1.3.dfsg-3.1` (!2995 - merged) • Oscar Tovar • 16.11. This MR bumps the version to 6.7.1 to allow us to release the changes made by Upgrade `zlib1g` to `1:1.3.dfsg-3.1` (!2995 - merged) • Oscar Tovar • 16.11.

What are the relevant issue numbers?

N/A

Does this MR meet the acceptance criteria?

• [-] Changelog trailer added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
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  • Job definition example
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• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer