.github: test with latest version of Node.js
.github: test with latest version of Node.js

actions/setup-node@v3.2.0 supports "latest" (or "current", or "node") to
refer to the latest release, whether or not it is an LTS release.  Use
it to test with the latest version of Node.js (which is what I've been
trying to do.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/stream-compare,kevinoid/stream-compare,kevinoid/stream-compare