Feed Update Suggestion - Broken 404 - Ruby Conference Updates 2021

[geraldb]

Hello,
first thanks for including the web feed for the Planet Ruby updates on upcoming conferences. Sorry for the trouble - the feed moved from /calendar to /conferences (and github sorry doesn't redirect).

If you can update:
https://planetruby.github.io/calendar/feed.xml old, broken to
to:
https://planetruby.github.io/conferences/feed.xml

That would be great. Thanks again for the great service. Keep it up. Cheers. Prosit 2021!