test: configure database connection

config/test.exs

@@ -9,10 +9,10 @@ config :argon2_elixir, t_cost: 1, m_cost: 8
 # to provide built-in test partitioning in CI environment.
 # Run `mix help test` for more information.
 config :comfycamp, Comfycamp.Repo,
-  username: "postgres",
-  password: "postgres",
+  username: "phoenix",
+  password: "simple-password",
   hostname: "localhost",
-  database: "comfycamp_test#{System.get_env("MIX_TEST_PARTITION")}",
+  database: "phoenix_test#{System.get_env("MIX_TEST_PARTITION")}",
   pool: Ecto.Adapters.SQL.Sandbox,
   pool_size: System.schedulers_online() * 2