chore(deps): update dependency stacklok/toolhive-registry-server to v0.6.4

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This PR contains the following updates:

Package	Update	Change
stacklok/toolhive-registry-server	patch	v0.6.3 → v0.6.4

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Release Notes

stacklok/toolhive-registry-server (stacklok/toolhive-registry-server)

v0.6.4

Compare Source

What's Changed

• Fix registry_entry uniqueness constraint by @​blkt in #​566
• Add v1 API stubs by @​rdimitrov in #​565
• Rename the publish file to entries by @​rdimitrov in #​568
• Split registry entries from their versions by @​blkt in #​569
• Update anthropics/claude-code-action digest to cd77b50 by @​renovate[bot] in #​572
• Update index.docker.io/library/golang Docker digest to c7e98cc by @​renovate[bot] in #​573
• Release v0.6.4 by @​stacklokbot in #​574

Full Changelog: stacklok/toolhive-registry-server@v0.6.3...v0.6.4

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