Bump Hex version requirement
Bump Hex version requirement

gfvcastro/elixir,michalmuskala/elixir,kimshrier/elixir,kimshrier/elixir,pedrosnk/elixir,lexmag/elixir,antipax/elixir,joshprice/elixir,pedrosnk/elixir,kelvinst/elixir,beedub/elixir,kelvinst/elixir,elixir-lang/elixir,lexmag/elixir,gfvcastro/elixir,beedub/elixir,ggcampinho/elixir,antipax/elixir,ggcampinho/elixir