Update date-fns w/ npm auto-update

[JSkimming]

Releases since 2.0.0-alpha0 have not picked up any files; see release 2.20.0.

After highlighting this with the author, @kossnocorp, in issue date-fns/date-fns#3791, he gave the green light to try to fix it.

I've changed the following:

1. Autoupdate from npm.
2. Pick up files beginning with cdn. in all folders.
3. Ignore versions containing a hyphen, as this seems to indicate pre-releases.
4. Don't optimize JS files, as minified versions come with the package

Note

I could not find documentation for the ignore format, so I based my pattern on examples I found elsewhere.

[MattIPv4]

LGTM, ty