ci: use Node.js current release for e2e tests and benchmarks

[merceyz]

What's the problem this PR addresses?

Our e2e tests and benchmarks use Node.js v18 which means by the time they catch regressions in the runtime itself a decent amount of time has passed.

How did you fix it?

Run them on the Node.js current release to catch regressions earlier.

Checklist

• I have read the Contributing Guide.
• I have set the packages that need to be released for my changes to be effective.
• I will check that all automated PR checks pass before the PR gets reviewed.