Update CI

Author: josevalim

.github/workflows/ci.yml

@@ -17,10 +17,10 @@ jobs:
       matrix:
         include:
           - pair:
-              elixir: "1.12"
+              elixir: "1.13"
               otp: "22"
           - pair:
-              elixir: "1.16.0"
+              elixir: "1.16"
               otp: "26"
             lint: lint
     steps:

mix.exs

@@ -2,13 +2,13 @@ defmodule ExDoc.Mixfile do
   use Mix.Project
 
   @source_url "https://github.com/elixir-lang/ex_doc"
-  @version "0.33.0"
+  @version "0.34.0-dev"
 
   def project do
     [
       app: :ex_doc,
       version: @version,
-      elixir: "~> 1.12",
+      elixir: "~> 1.13",
       deps: deps(),
       aliases: aliases(),
       package: package(),