Update node Docker tag to v18.20.4

This MR contains the following updates:

Package	Update	Change
node	patch	18.20.3-slim -> 18.20.4-slim

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Release Notes

nodejs/node (node)

v18.20.4: 2024-07-08, Version 18.20.4 'Hydrogen' (LTS), @​RafaelGSS

Compare Source

This is a security release.

Notable Changes

• CVE-2024-36138 - Bypass incomplete fix of CVE-2024-27980 (High)
• CVE-2024-22020 - Bypass network import restriction via data URL (Medium)

Commits

• [85abedf1ff] - lib,esm: handle bypass network-import via data: (RafaelGSS) nodejs-private/node-private#522
• [eccd63b865] - src: handle permissive extension on cmd check (RafaelGSS) nodejs-private/node-private#596

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