Bump credo from 1.4.1 to 1.5.4

Bumps [credo](https://github.com/rrrene/credo) from 1.4.1 to 1.5.4.
- [Release notes](https://github.com/rrrene/credo/releases)
- [Changelog](https://github.com/rrrene/credo/blob/master/CHANGELOG.md)
- [Commits](rrrene/credo@v1.4.1...v1.5.4)

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

Author: dependabot-preview[bot]

mix.lock

@@ -3,7 +3,7 @@
   "certifi": {:hex, :certifi, "2.5.2", "b7cfeae9d2ed395695dd8201c57a2d019c0c43ecaf8b8bcb9320b40d6662f340", [:rebar3], [{:parse_trans, "~>3.3", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm", "3b3b5f36493004ac3455966991eaf6e768ce9884693d9968055aeeeb1e575040"},
   "combine": {:hex, :combine, "0.10.0", "eff8224eeb56498a2af13011d142c5e7997a80c8f5b97c499f84c841032e429f", [:mix], [], "hexpm", "1b1dbc1790073076580d0d1d64e42eae2366583e7aecd455d1215b0d16f2451b"},
   "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [:mix], [], "hexpm", "4a0850c9be22a43af9920a71ab17c051f5f7d45c209e40269a1938832510e4d9"},
-  "credo": {:hex, :credo, "1.4.1", "16392f1edd2cdb1de9fe4004f5ab0ae612c92e230433968eab00aafd976282fc", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "155f8a2989ad77504de5d8291fa0d41320fdcaa6a1030472e9967f285f8c7692"},
+  "credo": {:hex, :credo, "1.5.4", "9914180105b438e378e94a844ec3a5088ae5875626fc945b7c1462b41afc3198", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "cf51af45eadc0a3f39ba13b56fdac415c91b34f7b7533a13dc13550277141bc4"},
   "credo_naming": {:hex, :credo_naming, "1.0.0", "eb7391de9aa57b2e1f165899923b4f0922209da6ce3213837db19cbf9c595e18", [:make, :mix], [{:credo, "~> 1.4", [hex: :credo, repo: "hexpm", optional: false]}], "hexpm", "bd370189dac84553f91ed499719bd77f3a82a0df790f254550447a121c21bd45"},
   "db_connection": {:hex, :db_connection, "2.3.0", "d56ef906956a37959bcb385704fc04035f4f43c0f560dd23e00740daf8028c49", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}], "hexpm", "dcc082b8f723de9a630451b49fdbd7a59b065c4b38176fb147aaf773574d4520"},
   "decimal": {:hex, :decimal, "2.0.0", "a78296e617b0f5dd4c6caf57c714431347912ffb1d0842e998e9792b5642d697", [:mix], [], "hexpm", "34666e9c55dea81013e77d9d87370fe6cb6291d1ef32f46a1600230b1d44f577"},
@@ -19,6 +19,7 @@
   "ex_doc": {:hex, :ex_doc, "0.23.0", "a069bc9b0bf8efe323ecde8c0d62afc13d308b1fa3d228b65bca5cf8703a529d", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "f5e2c4702468b2fd11b10d39416ddadd2fcdd173ba2a0285ebd92c39827a5a16"},
   "ex_json_schema": {:hex, :ex_json_schema, "0.7.4", "09eb5b0c8184e5702bc89625a9d0c05c7a0a845d382e9f6f406a0fc1c9a8cc3f", [:mix], [], "hexpm", "45c67fa840f0d719a2b5578126dc29bcdc1f92499c0f61bcb8a3bcb5935f9684"},
   "excoveralls": {:hex, :excoveralls, "0.13.3", "edc5f69218f84c2bf61b3609a22ddf1cec0fbf7d1ba79e59f4c16d42ea4347ed", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "cc26f48d2f68666380b83d8aafda0fffc65dafcc8d8650358e0b61f6a99b1154"},
+  "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "gettext": {:hex, :gettext, "0.18.0", "406d6b9e0e3278162c2ae1de0a60270452c553536772167e2d701f028116f870", [:mix], [], "hexpm", "c3f850be6367ebe1a08616c2158affe4a23231c70391050bf359d5f92f66a571"},
   "hackney": {:hex, :hackney, "1.16.0", "5096ac8e823e3a441477b2d187e30dd3fff1a82991a806b2003845ce72ce2d84", [:rebar3], [{:certifi, "2.5.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.1", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.0", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.6", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm", "3bf0bebbd5d3092a3543b783bf065165fa5d3ad4b899b836810e513064134e18"},
   "httpoison": {:hex, :httpoison, "1.7.0", "abba7d086233c2d8574726227b6c2c4f6e53c4deae7fe5f6de531162ce9929a0", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "975cc87c845a103d3d1ea1ccfd68a2700c211a434d8428b10c323dc95dc5b980"},