chore(deps): update sigstore package dependencies to v1 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
ghcr.io/sigstore/scaffolding/trillian_log_server	major	v0.6.17 -> v1.6.0
ghcr.io/sigstore/scaffolding/trillian_log_signer	major	v0.6.17 -> v1.6.0

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[!WARNING] Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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