Can't install w3 cli on node 14 with npm 6

[andrew]

Dependency of w3, ipfs-unixfs currently requires npm 7 or greater to install, trying to install on node 14 with npm 6 results in an error:

npm WARN notsup Unsupported engine for ipfs-unixfs@5.0.0: wanted: {"node":">=14.0.0","npm":">=7.0.0"} (current: {"node":"14.17.5","npm":"6.14.14"})
npm WARN notsup Not compatible with your version of node/npm: ipfs-unixfs@5.0.0

node 14 and npm 6 are the default latest versions installed on the snap store: https://snapcraft.io/node, also the latest LTS release I think so it would be good to be able to use it without needing to upgrade the package manager.