Update @metalsmith/permalinks to 2.5.1

[epreston]

Updates the @metalsmith/permalinks plugin to 2.5.1

Adjusts metalsmith plugin order and adopts the replacement for the path attribute, permalinks.

Fixes: #521

I confirm I have read the contributing guidelines and signed the Contributor License Agreement.

[willeastcott]

Wow, it's been a while since this repo had up to date dependencies. You're a life-saver, @epreston! 🙏

[willeastcott]

Ooo, I think there might be a problem though. I just did a diff pre and post this PR:

This is the tutorial index page.

[epreston]

I'll get onto that.

We might need to drop on of the 3rd party plugins for metalsmith that formats the final output. We could replace it with prettier for the same result. It hasn't gotten updates in 8 years and give security / dependency warnings.

[epreston]

I think I know what to do there.

[epreston]

Revert ? This might take an hour or two.

[willeastcott]

It's fine. We don't have any deployments planned. 😄

[epreston]

I did a winmerge compare after the fix. There are some differences but they all look like content differences.

[epreston]

Looks like the non English languages are getting duplicate navigation menus ?