Update alpine Docker tag to v3.23.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
alpine	final	patch	3.23.3 → 3.23.4

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Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• Dockerfile - Alpine base image patch version update (3.23.3 → 3.23.4)

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_{Reviewed by claude-4.5-sonnet-20250929 · 61,194 tokens}