Switch to a single job to build the npm package

The architecture specific jobs pull it in and then build releases.

Much faster!

ci/steps/static-release.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+main() {
+  cd "$(dirname "$0")/../.."
+
+  yarn release:static
+  ./ci/build/test-static-release.sh
+  ./ci/build/archive-static-release.sh
+
+  if [[ $OSTYPE == linux* ]]; then
+    yarn pkg
+  fi
+}
+
+main "$@"