Upgrade node to version 20

[roshaanbajwa]

Description

Checklist

• [ ] Tested against our testing policy (Resolution, Browser & Accessibility)
• [ ] Follows our coding standards and style guide
• [ ] CHANGELOG entry

[frankieroberto]

@roshaanbajwa did upgrading node require all these dependencies to be updated at the same time (which then affected the reference screenshots in the tests)? 😩

[roshaanbajwa]

@roshaanbajwa did upgrading node require all these dependencies to be updated at the same time (which then affected the reference screenshots in the tests)? 😩

The plan was to have a big dependancy update and hopefully a lot of those reference changes can be reverted back soon (because a lot of them seem to be inconsistent)! But parking this work until after tomorrow's release