Bump gettext from 0.16.1 to 0.18.2

Bumps [gettext](https://github.com/elixir-gettext/gettext) from 0.16.1 to 0.18.2.
- [Release notes](https://github.com/elixir-gettext/gettext/releases)
- [Changelog](https://github.com/elixir-gettext/gettext/blob/master/CHANGELOG.md)
- [Commits](elixir-gettext/gettext@v0.16.1...v0.18.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

mix.exs

@@ -41,7 +41,7 @@ defmodule Chess.Mixfile do
       {:plug_cowboy, "~> 2.1"},
       {:credo, "~> 1.0", only: [:dev, :test]},
       {:formulator, "~> 0.1.6"},
-      {:gettext, "~> 0.16.0"},
+      {:gettext, "~> 0.18.2"},
       {:guardian, "~> 1.0"},
       {:jason, "~> 1.0"},
       {:phoenix, "~> 1.5.7"},

mix.lock

@@ -16,7 +16,7 @@
   "elixir_make": {:hex, :elixir_make, "0.6.2", "7dffacd77dec4c37b39af867cedaabb0b59f6a871f89722c25b28fcd4bd70530", [:mix], [], "hexpm", "03e49eadda22526a7e5279d53321d1cced6552f344ba4e03e619063de75348d9"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "formulator": {:hex, :formulator, "0.1.8", "eb43e1646828edb6614c2cf9c269d55b3d970414684f1e0290734d22c4936af4", [:mix], [{:gettext, ">= 0.11.0", [hex: :gettext, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.4", [hex: :phoenix_html, repo: "hexpm", optional: false]}], "hexpm", "dae3ff05743db0e31ef722e6e6ef7ed32836a65c422979e4c09b7c2f0494cf2c"},
-  "gettext": {:hex, :gettext, "0.16.1", "e2130b25eebcbe02bb343b119a07ae2c7e28bd4b146c4a154da2ffb2b3507af2", [:mix], [], "hexpm", "dd3a7ea5e3e87ee9df29452dd9560709b4c7cc8141537d0b070155038d92bdf1"},
+  "gettext": {:hex, :gettext, "0.18.2", "7df3ea191bb56c0309c00a783334b288d08a879f53a7014341284635850a6e55", [:mix], [], "hexpm", "f9f537b13d4fdd30f3039d33cb80144c3aa1f8d9698e47d7bcbcc8df93b1f5c5"},
   "guardian": {:hex, :guardian, "1.2.1", "bdc8dd3dbf0fb7216cb6f91c11831faa1a64d39cdaed9a611e37f2413e584983", [:mix], [{:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.3", [hex: :phoenix, repo: "hexpm", optional: true]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "723fc404edfb7bd5cba4cd83329b352037f102aa97468f44e58ac7f47c136a98"},
   "hackney": {:hex, :hackney, "1.17.0", "717ea195fd2f898d9fe9f1ce0afcc2621a41ecfe137fae57e7fe6e9484b9aa99", [:rebar3], [{:certifi, "~>2.5", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "~>3.3", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "64c22225f1ea8855f584720c0e5b3cd14095703af1c9fbc845ba042811dc671c"},
   "httpoison": {:hex, :httpoison, "1.7.0", "abba7d086233c2d8574726227b6c2c4f6e53c4deae7fe5f6de531162ce9929a0", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "975cc87c845a103d3d1ea1ccfd68a2700c211a434d8428b10c323dc95dc5b980"},