Update public.ecr.aws/lambda/python:3.14 Docker digest to caf9d11

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
public.ecr.aws/lambda/python	final	digest	c7fd51c → caf9d11

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[github-actions]

🤖 Claude Code Review

PR Code Review

This PR updates the Docker base image SHA256 digest from c7fd51c... to caf9d11... for public.ecr.aws/lambda/python:3.14.

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Code Quality

• ✅ Style guide: Single-line change follows existing conventions.
• ✅ No commented-out code: N/A.
• ✅ Meaningful variable names: BASE_IMAGE is clear.
• ✅ DRY principle: N/A.
• ✅ Defects: No bugs or logic errors. Pinning by SHA256 digest is correct practice for reproducible builds and security.

Testing

• ✅ Unit/integration tests: No application logic changed; no tests required for a base image digest bump.

Documentation

• ✅ README: No changes needed.
• ✅ API docs: N/A.
• ❌ CHANGELOG.md not updated (CHANGELOG.md:9): The most recent entry is [1.0.5] - 2024-06-24. This digest update (as is the prior pattern in this repo) should have a new versioned entry documenting the FROM instruction change.
• ❌ REFRESHED_AT not updated (Dockerfile:4): The ENV REFRESHED_AT=2025-12-22 value is still set to December 2025. Since this is a new image refresh, this date should be updated to reflect when the digest was refreshed (today's date: 2026-03-01).

Security

• ✅ No hardcoded credentials.
• ✅ No sensitive data.
• ✅ No .lic files.
• ✅ Digest pinning: Using a full SHA256 digest is a security best practice — prevents tag mutation attacks.

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Summary

The change itself is correct and safe. Two issues should be addressed:

1. REFRESHED_AT date is stale — update Dockerfile:4 from 2025-12-22 to the current date.
2. CHANGELOG.md missing entry — add a new versioned section documenting the base image digest update, consistent with all prior entries in the changelog.

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