build(deps-dev): bump excoveralls from 0.18.0 to 0.18.1

Bumps [excoveralls](https://github.com/parroty/excoveralls) from 0.18.0 to 0.18.1.
- [Release notes](https://github.com/parroty/excoveralls/releases)
- [Changelog](https://github.com/parroty/excoveralls/blob/master/CHANGELOG.md)
- [Commits](parroty/excoveralls@v0.18.0...v0.18.1)

---
updated-dependencies:
- dependency-name: excoveralls
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

mix.lock

@@ -20,7 +20,7 @@
   "envar": {:hex, :envar, "1.0.9", "b51976b00035efd254c3f51ee7f3cf2e22f91350ef104da393d1d71286eb4fdc", [:mix], [], "hexpm", "bfc3a73f97910c744e0d9e53722ad2d1f73bbb392d2dd1cac63e0af27776fde3"},
   "esbuild": {:hex, :esbuild, "0.8.1", "0cbf919f0eccb136d2eeef0df49c4acf55336de864e63594adcea3814f3edf41", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}, {:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "25fc876a67c13cb0a776e7b5d7974851556baeda2085296c14ab48555ea7560f"},
   "ex_doc": {:hex, :ex_doc, "0.31.2", "8b06d0a5ac69e1a54df35519c951f1f44a7b7ca9a5bb7a260cd8a174d6322ece", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.1", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "317346c14febaba9ca40fd97b5b5919f7751fb85d399cc8e7e8872049f37e0af"},
-  "excoveralls": {:hex, :excoveralls, "0.18.0", "b92497e69465dc51bc37a6422226ee690ab437e4c06877e836f1c18daeb35da9", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "1109bb911f3cb583401760be49c02cbbd16aed66ea9509fc5479335d284da60b"},
+  "excoveralls": {:hex, :excoveralls, "0.18.1", "a6f547570c6b24ec13f122a5634833a063aec49218f6fff27de9df693a15588c", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "d65f79db146bb20399f23046015974de0079668b9abb2f5aac074d078da60b8d"},
   "fields": {:hex, :fields, "2.10.3", "2683d8fdfd582869b459c88c693c4e15e2247961869719e03213286764b82093", [:mix], [{:argon2_elixir, "~> 3.0.0", [hex: :argon2_elixir, repo: "hexpm", optional: false]}, {:ecto, "~> 3.3", [hex: :ecto, repo: "hexpm", optional: false]}, {:envar, "~> 1.0.8", [hex: :envar, repo: "hexpm", optional: false]}, {:html_sanitize_ex, "~> 1.4.2", [hex: :html_sanitize_ex, repo: "hexpm", optional: false]}], "hexpm", "d68567e175fb6d3be04cdf795fc6ed94973c66706ca3f87e2ec6251159b4b965"},
   "file_system": {:hex, :file_system, "1.0.0", "b689cc7dcee665f774de94b5a832e578bd7963c8e637ef940cd44327db7de2cd", [:mix], [], "hexpm", "6752092d66aec5a10e662aefeed8ddb9531d79db0bc145bb8c40325ca1d8536d"},
   "floki": {:hex, :floki, "0.36.1", "712b7f2ba19a4d5a47dfe3e74d81876c95bbcbee44fe551f0af3d2a388abb3da", [:mix], [], "hexpm", "21ba57abb8204bcc70c439b423fc0dd9f0286de67dc82773a14b0200ada0995f"},