chore(deps): update rust:1.90.0-alpine3.21 docker digest to 3757b14

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rust	final	digest	1b3ecdc -> 3757b14

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[claude]

Pull Request Review

Summary

This PR updates the Docker digest for rust:1.90.0-alpine3.21 from 1b3ecdc to 3757b14 across all CI Dockerfiles. This is an automated dependency update from Renovate.

Code Quality ✅

• Clean and consistent: All 5 Dockerfiles are updated uniformly
• Follows best practices: Using pinned Docker image digests for reproducible builds
• No code style issues: Changes are mechanical and consistent

Potential Bugs or Issues ✅

• No bugs identified: This is a straightforward Docker digest update
• Low risk change: Only updates the SHA256 digest reference for the same base image version
• Automated testing: The PR should be validated by existing CI checks

Performance Considerations ✅

• Neutral impact: Docker digest updates don't affect runtime performance
• Build time: May see minor variations in Docker layer caching, but no significant impact expected

Security Considerations ✅

• Positive security practice: Pinning Docker images by digest ensures immutable, verifiable builds
• Supply chain security: The digest update likely includes security patches or minor fixes in the base image
• Recommendation: Verify that the new digest corresponds to a legitimate Rust Alpine image update

Test Coverage ✅

• No new code: No test changes needed as this only updates Docker base images
• CI validation: Existing CI workflows will validate that all Docker builds work with the new digest

Recommendations

1. ✅ Verify digest authenticity: Confirm the new digest 3757b14 is legitimate by checking the official Rust Docker Hub repository
2. ✅ Monitor CI: Ensure all CI checks pass before merging
3. ✅ Automerge safe: This type of dependency update is suitable for automerge if CI passes

Overall Assessment

LGTM ✅ - This is a routine dependency update that follows security best practices. The changes are low-risk and maintain build reproducibility. Approve once CI checks pass.

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Review performed by Claude Code