Working test version of confirmation email delivery

mix.exs

@@ -42,14 +42,15 @@ defmodule Osuuspuutarha.MixProject do
       {:floki, ">= 0.30.0", only: :test},
       {:phoenix_live_dashboard, "~> 0.6"},
       {:esbuild, "~> 0.4", runtime: Mix.env() == :dev},
-      {:swoosh, "~> 1.3"},
+      {:swoosh, "~> 1.6"},
       {:telemetry_metrics, "~> 0.6"},
       {:telemetry_poller, "~> 1.0"},
       {:gettext, "~> 0.18"},
       {:jason, "~> 1.2"},
       {:plug_cowboy, "~> 2.5"},
       {:elixlsx, "~> 0.5.1"},
-      {:credo, "~> 1.7", only: [:dev, :test], runtime: false}
+      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
+      {:gen_smtp, "~> 1.0"}
     ]
   end