Update to Node 18 & gatsby 5

[orta]

Needs a 2nd pass because it looks like the build command has issues which the local dev server does not, but this updates everything!

[orta]

OK, that's building fine locally now

[orta]

( this PR is worth some attention )

[jakebailey]

Hoping we can make some progress on this; there seem to be a bunch of unrelated content changes. Do you want me to push to this branch to get it de-conflicted? Is there any other work left to be done here?

[orta]

It's been a while, but I think most of those changes are either running bootstrap or updating libs to versions which support node 18 - sure give it a shot, I think it was done

[jakebailey]

Well, I tried to update this PR... it passes locally but fails in CI.

[jakebailey]

Figured it out, gatsby-plugin-typegen doesn't generate code when CI=true: https://github.com/cometkim/gatsby-plugin-typegen/blob/b452c4274e35d3e0eebcad930696eb7131d8be8b/plugin/src/utils.ts#L14

The "fix" is to commit the file. If we ever modify it, it'll be modified on disk and should be committed anyway. gitignored but required generated files are such a pain 🙁

I also modified CI to make it complain, replacing #2901 with the same simple diff we do in TS's CI (and I do in my own repos for generated code).

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://delightful-glacier-09aa73710-2717.centralus.azurestaticapps.net

[orta]

eyyy, nice one

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://delightful-glacier-09aa73710-2717.centralus.azurestaticapps.net