Update for latest timex 3.3.0

[kidbombay]

When trying to install, I'm already using timex 3.3.0
I get an error

Failed to use "timex" (version 3.3.0) because
  cloudex (versions 1.0.0 and 1.0.1) requires ~> 3.1.7
  mix.lock specifies 3.3.0

defp deps do
    [
      {:phoenix, "~> 1.3.2"},
      {:phoenix_pubsub, "~> 1.0"},
      {:phoenix_ecto, "~> 3.2"},
      {:postgrex, ">= 0.0.0"},
      {:phoenix_html, "~> 2.10"},
      {:phoenix_live_reload, "~> 1.0", only: :dev},
      {:gettext, "~> 0.11"},
      {:cowboy, "~> 1.0"},
      {:comeonin, "~> 4.0"},
      {:argon2_elixir, "~> 1.2"},
      {:timex, "~> 3.1"},
      {:ex_debug_toolbar, "~> 0.4.0"},
      {:earmark, "~> 1.1"},
      {:ecto_autoslug_field, "~> 0.5"},
      {:cloudex, "~> 1.0.0"}
    ]
  end

[smeevil]

deps has been updated in 1.2.0 :)