Why does link-check 5.0.0 fail?

[jboxman]

With version 5 of link-check, tests fail.

> @jboxman/asciidoc-aware-link-check@2.0.0 test .../asciidoc-aware-link-check
> tape test/**/*.test.js

TAP version 13
# asciidoctor include preprocessor
# CLI
ok 1 Given links that match ignore list: should ignore links
string_decoder.js:58
      throw new ERR_UNKNOWN_ENCODING(enc);
      ^

TypeError [ERR_UNKNOWN_ENCODING]: Unknown encoding: UTF-8
    at normalizeEncoding (string_decoder.js:58:13)
    at new StringDecoder (string_decoder.js:72:19)
    at new ReadableState (internal/streams/readable.js:162:20)
    at StreamDecoder.Readable (internal/streams/readable.js:176:25)
    at StreamDecoder.Duplex (internal/streams/duplex.js:56:12)
    at StreamDecoder.Transform (internal/streams/transform.js:117:10)
    at new StreamDecoder (/Users/jasonb/Self/projects/asciidoc-aware-link-check/node_modules/needle/lib/decoder.js:13:20)
    at module.exports (/Users/jasonb/Self/projects/asciidoc-aware-link-check/node_modules/needle/lib/decoder.js:50:12)
    at ClientRequest.<anonymous> (/Users/jasonb/Self/projects/asciidoc-aware-link-check/node_modules/needle/lib/needle.js:639:21)
    at Object.onceWrapper (events.js:520:26) {
  code: 'ERR_UNKNOWN_ENCODING'
}
npm ERR! Test failed.  See above for more details.