snapcraft.yaml: Install bin/node from node/14/stable
snapcraft.yaml: Install bin/node from node/14/stable

Resolves regression introduced in my previous commit 243951e.
Special thanks to @jmooring for reporting the issue!

TODO: Strip the bin/node binary?

gohugoio/hugo,anthonyfok/hugo,gohugoio/hugo,anthonyfok/hugo,gohugoio/hugo,anthonyfok/hugo