Node 20 Upgrade

[BilalQamar95]

Description

Part of openedx/public-engineering#230. See openedx/public-engineering#267 for the general description and motivation. Make sure to follow its recommendations for each step of the process.

- [ ] https://github.com/openedx/credentials-themes/pull/853
- [ ] https://github.com/openedx/credentials-themes/pull/847
- [ ] https://github.com/openedx/credentials-themes/pull/860