Update node Docker tag to v20.19.4

This MR contains the following updates:

Package	Update	Change
node	patch	20.19.3-slim -> 20.19.4-slim

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⚠️ Warning

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Release Notes

nodejs/node (node)

v20.19.4: 2025-07-15, Version 20.19.4 'Iron' (LTS), @​RafaelGSS

Compare Source

This is a security release.

Notable Changes

• (CVE-2025-27210) Windows Device Names (CON, PRN, AUX) Bypass Path Traversal Protection in path.normalize()

Commits

• [db7b93fcef] - (CVE-2025-27210) lib: handle all windows reserved driver name (RafaelGSS) nodejs-private/node-private#721

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