Transitive deprecated dependencies

[Yurickh]

http-server currently depends on http-encoding-sniffer@3.

http-encoding-sniffer@3 in turn, adds a deprecated dependency to the dependency chain, whatwg-encoding.

This dependency has been removed from http-encoding-sniffer since http-encoding-sniffer@5.

According to http-encoding-sniffer's changelogs, the only breaking change is dropping the support for node between 16-20.

Currently http-server supports node 16 though, so in order to bump http-encoding-sniffer, we'd have to release a major dropping that support as well.