Upgrade Node JS to 20

[feanil]

Description

Node 18 is already in maintenance status, and support will end on 2025-04-30. Node 20 is the current LTS release, with a corresponding End-of-life of 2026-04-30. We should migrate to the latter before support runs out on 18.

Taking how long the Node 16 upgrade took, there is some urgency in starting this. A full year sounds like a lot, but it might not be.

Tasks

Beta Give feedback

1. Update all Released Django services to use Node 20 public-engineering#230
   3 of 3
   epic maintenance +2
2. Update all Released MFEs and Libraries to use Node 20 public-engineering#267
   43 of 43
   epic maintenance +2
   
3. Update all Released JS Libraries to support Node 20 public-engineering#232
   1 of 1
   epic maintenance +2
4. Update tutor-mfe to use Node 20 overhangio/tutor-mfe#198
   +0
   
5. chore: upgrade to node 18 edx-platform#34311
   +0

[feanil]

We are de-prioritizing this till after the Redwood cut because we don't have capacity to do both things.

[github-actions]

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