chore(deps): bump github.com/knadh/koanf to v2.0.1

[kralicky]

Part of ory/x#693

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
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• I have added tests that prove my fix is effective or that my feature
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Further Comments

[kralicky]

@aeneasr can you confirm that the update to github.com/ory/analytics-go/v5 is ok here? It was updated automatically with ory/x so I also fixed an (ostensibly) renamed field.