Upgrade Debian base image to debian12

[russellhaering]

Summary

Upgraded the distroless base image from static-debian11 to static-debian12 (Bookworm) to keep up with the latest stable Debian release and receive security updates.

Changes

• Updated Dockerfile to use gcr.io/distroless/static-debian12:nonroot instead of static-debian11

Test plan

• Go tests pass
• Build succeeds
• CI tests pass

Notes

The static-debian12 image maintains compatibility with the statically compiled binary while providing updated system libraries and security patches.

Resolves: OPS-170

🤖 Generated with Claude Code

[linear]

OPS-170 Upgrade c1 Debian base image to 53-slim

[coderabbitai]

Important

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• 🔍 Trigger a full review

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch upgrade-debian-base-image

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