remove ecto module and move to version 2.X (#154)

* start working on v2.0

* go to next major version 2.0.0

Author: jarlah

lib/ecto.ex

@@ -2,7 +2,7 @@ defmodule Testcontainers.Constants do
   @moduledoc false
 
   def library_name, do: :testcontainers
-  def library_version, do: "1.14.0"
+  def library_version, do: "2.0.0"
   def ryuk_version, do: "0.13.0"
   def container_label, do: "org.testcontainers"
   def container_lang_label, do: "org.testcontainers.lang"

lib/util/constants.ex

@@ -2,7 +2,7 @@ defmodule TestcontainersElixir.MixProject do
   use Mix.Project
 
   @app :testcontainers
-  @version "1.14.0"
+  @version "2.0.0"
   @source_url "https://github.com/testcontainers/testcontainers-elixir"
 
   def project do
@@ -56,9 +56,6 @@ defmodule TestcontainersElixir.MixProject do
       {:tesla, "~> 1.7"},
       {:jason, "~> 1.4"},
       {:hackney, "~> 1.20"},
-      # ecto module
-      {:ecto_sql, "~> 3.3", optional: true},
-      {:ecto, "~> 3.3", optional: true},
       # mysql
       {:myxql, "~> 0.4", only: [:dev, :test]},
       # postgres