Fix deprecation warning

Author: niknetniko

config/test.exs

@@ -24,7 +24,7 @@ config :zout, ZoutWeb.Endpoint,
 config :zout, Zout.Mailer, adapter: Swoosh.Adapters.Test
 
 # Print only warnings and errors during test
-config :logger, level: :warn
+config :logger, level: :warning
 
 # Initialize plugs at runtime for faster test compilation
 config :phoenix, :plug_init_mode, :runtime