GitHub is no longer going to support running actions on Node 16 and requires upgrading to Node 20 (see blog). This PR addresses that with updates to:

 * action runtime
 * workflows
 * node types

Tests passed when run locally. Closes #65.

Add @types/node to devDependencies to ensure we get the proper version and bump @vercel/ncc to the latest, and update package-lock using `npm install` which also prepares the package.

* Bump undici from 5.28.2 to 5.28.3

Bumps [undici](https://github.com/nodejs/undici) from 5.28.2 to 5.28.3.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.2...v5.28.3)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

* recompile

* Try again

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: John Lawson <[email protected]>

* Bump undici from 5.28.3 to 5.28.4

Bumps [undici](https://github.com/nodejs/undici) from 5.28.3 to 5.28.4.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.3...v5.28.4)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

* Rebuild compiled file

* Bump version

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: John Lawson <[email protected]>