Allow poison 6 (#505)

fixes #504

Author: ananthakumaran

mix.exs

@@ -32,7 +32,7 @@ defmodule Exq.Mixfile do
     [
       {:elixir_uuid, ">= 1.2.0"},
       {:redix, ">= 0.9.0"},
-      {:poison, ">= 1.2.0 and < 6.0.0", optional: true},
+      {:poison, ">= 1.2.0 and < 7.0.0", optional: true},
       {:jason, "~> 1.0", optional: true},
 
       # test

mix.lock

@@ -21,7 +21,7 @@
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.1.0", "3a6fca1550363552e54c216debb6a9e95bd8d32348938e13de5eda962c0d7f89", [:mix], [], "hexpm", "08eb32d66b706e913ff748f11694b17981c0b04a33ef470e33e11b3d3ac8f54b"},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
-  "poison": {:hex, :poison, "5.0.0", "d2b54589ab4157bbb82ec2050757779bfed724463a544b6e20d79855a9e43b24", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "11dc6117c501b80c62a7594f941d043982a1bd05a1184280c0d9166eb4d8d3fc"},
+  "poison": {:hex, :poison, "6.0.0", "9bbe86722355e36ffb62c51a552719534257ba53f3271dacd20fbbd6621a583a", [:mix], [{:decimal, "~> 2.1", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "bb9064632b94775a3964642d6a78281c07b7be1319e0016e1643790704e739a2"},
   "ranch": {:hex, :ranch, "1.7.0", "9583f47160ca62af7f8d5db11454068eaa32b56eeadf984d4f46e61a076df5f2", [:rebar3], [], "hexpm", "59f7501c3a56125b2fc5684c3048fac9d043c0bf4d173941b12ca927949af189"},
   "redix": {:hex, :redix, "0.10.2", "a9eabf47898aa878650df36194aeb63966d74f5bd69d9caa37babb32dbb93c5d", [:mix], [{:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "251b329893b8f6bb115fc0e30df7f12ee641b1e4547d760cf0909416a209f9bd"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},