Support test containers only on v1.15 of elixir

.github/workflows/integration.yml

@@ -59,8 +59,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        elixir: ['1.12.3']
-        otp: ['24.3.4']
+        elixir: ['1.15']
+        otp: ['26.1']
 
     steps:
       - name: Cancel Previous Runs

mix.exs

@@ -45,8 +45,6 @@ defmodule Kayrock.MixProject do
       {:crc32cer, "~> 0.1"},
       {:varint, "~> 1.2"},
       {:connection, "~> 1.1"},
-      # Integration Tests
-      {:testcontainers, "~> 1.5", only: [:test]},
 
       # Dev/Test
       {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
@@ -57,6 +55,15 @@ defmodule Kayrock.MixProject do
       {:snappy, git: "https://github.com/fdmanana/snappy-erlang-nif", only: [:dev, :test]},
       {:snappyer, "~> 1.2", only: [:dev, :test]}
     ]
+    |> integration_test_deps()
+  end
+
+  defp integration_test_deps(deps_list) do
+    if Version.match?(System.version(), ">= 1.15.0") do
+      [{:testcontainers, "~> 1.5"} | deps_list]
+    else
+      deps_list
+    end
   end
 
   defp elixirc_paths(:test), do: ["lib", "test/support"]