Update node versions in .tool-versions

What does this Merge Request do and why?

With gitlab-ui!2725 (merged), we are able to update the node version in .tool-versions.

Generated support/asdf-combine

Merge Request checklist

• This change is backward compatible. If not, please include steps to communicate to our users.
• Tests added for new functionality. If not, please raise Issue to follow-up.
• Documentation added/updated, if needed.
• gdk doctor test added, if needed.
• Add the ~highlight label if this MR should be included in the CHANGELOG.md.