Currently Compass is on electron 15. Now that we've removed our usage of Spectron we can update to newer electron versions easier.

When upgrading we should:

• Ensure we account for all of the breaking changes in the new versions: https://www.electronjs.org/docs/latest/breaking-changes
• Ensure we handle any styling changes which come with newer electron/chrome versions.
• Ensure e2e tests still function as before (the APIs which puppeteer uses may have changed).