[Bug 1309525] Bump up Elixir version

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1309525

Randy Barlow  changed:

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--- Comment #2 from Randy Barlow  ---
I agree with Martin, we can't break backwards compatibility. Perhaps copr would
be a good place to do something like this?

FWIW, I'm very excited about the Erlang stack in the upcoming F24 release!