chore(deps): update dependency bcrypt_elixir to v3

mix.exs

@@ -33,7 +33,7 @@ defmodule Ketbin.MixProject do
   # Type `mix help deps` for examples and options.
   defp deps do
     [
-      {:bcrypt_elixir, "~> 2.0"},
+      {:bcrypt_elixir, "~> 3.0"},
       {:phoenix, "~> 1.6.7"},
       {:phoenix_ecto, "~> 4.4"},
       {:ecto_sql, "~> 3.7"},