mix: Update all dependencies

mix.exs

@@ -126,7 +126,8 @@ defmodule Pleroma.Mixfile do
       {:telemetry_poller, "~> 1.0"},
       {:tzdata, "~> 1.0.3"},
       {:plug_cowboy, "~> 2.3"},
-      {:oban, "~> 2.13"},
+      # oban 2.14 requires Elixir 1.12+
+      {:oban, "~> 2.13.4"},
       {:gettext,
        git: "https://github.com/tusooa/gettext.git",
        ref: "72fb2496b6c5280ed911bdc3756890e7f38a4808",
@@ -148,7 +149,8 @@ defmodule Pleroma.Mixfile do
       {:ex_aws, "~> 2.1.6"},
       {:ex_aws_s3, "~> 2.0"},
       {:sweet_xml, "~> 0.7.2"},
-      {:earmark, "~> 1.4.22"},
+      # earmark 1.4.23 requires Elixir 1.12+
+      {:earmark, "1.4.22"},
       {:bbcode_pleroma, "~> 0.2.0"},
       {:cors_plug, "~> 2.0"},
       {:web_push_encryption, "~> 0.3.1"},