Fix Elixir 1.20 warnings (#9)

Author: whatyouhide

.github/workflows/main.yml

@@ -9,12 +9,12 @@ on:
 jobs:
   test:
     name: Test (Elixir ${{matrix.elixir}} | Erlang/OTP ${{matrix.otp}})
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
         include:
-          - otp: '25'
+          - otp: "29.0.1"
             elixir: main
             lint: true
     env:
@@ -30,7 +30,7 @@ jobs:
         with:
           otp-version: ${{ matrix.otp }}
           elixir-version: ${{ matrix.elixir }}
-          version-type: 'strict'
+          version-type: "strict"
 
       - name: Install dependencies
         run: mix do deps.get --only test, deps.compile

lib/logger_backends/watcher.ex

@@ -1,7 +1,6 @@
 defmodule LoggerBackends.Watcher do
   @moduledoc false
 
-  require Logger
   use GenServer
 
   def start_link(tuple) do

mix.exs

@@ -12,7 +12,6 @@ defmodule LoggerBackends.MixProject do
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       docs: docs(),
-      preferred_cli_env: [docs: :docs, "hex.publish": :docs],
 
       # Hex
       description: "Logger backends functionality for Elixir v1.15+",
@@ -31,6 +30,10 @@ defmodule LoggerBackends.MixProject do
     ]
   end
 
+  def cli do
+    [preferred_envs: [docs: :docs, "hex.publish": :docs]]
+  end
+
   defp docs do
     [
       main: "LoggerBackends",