Fix calls to deprecated Logger.warn/2 (#94)

Author: solar05

.github/workflows/ci.yml

@@ -15,9 +15,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - pair:
-              elixir: 1.10.4
-              otp: 22.3.4
           - pair:
               elixir: 1.11.4
               otp: 23.2.7

lib/plug/cowboy.ex

@@ -349,7 +349,7 @@ defmodule Plug.Cowboy do
     {timeout, opts} = Keyword.pop(opts, :timeout)
 
     if timeout do
-      Logger.warn("the :timeout option for Cowboy webserver has no effect and must be removed")
+      Logger.warning("the :timeout option for Cowboy webserver has no effect and must be removed")
     end
 
     opts = Keyword.delete(opts, :otp_app)

mix.exs

@@ -9,7 +9,7 @@ defmodule Plug.Cowboy.MixProject do
     [
       app: :plug_cowboy,
       version: @version,
-      elixir: "~> 1.10",
+      elixir: "~> 1.11",
       deps: deps(),
       package: package(),
       description: @description,