tools: ensure daily wpt nightly node version can be installed
This PR updates the nightly version query to ensure that a build for platform linux and architecture x64 exists by adding a query to jq, it is now looking for the first listed nightly with "linux-x64"
in files.
This will avoid the issue that occurred during the latest run possibly caused by a nightly build failing. See v20.0.0-nightly202302287a37829ccb
in https://nodejs.org/download/nightly/index.json