updated langchain library version

mix.exs

@@ -45,7 +45,7 @@ defmodule LangChainDemo.MixProject do
       {:tailwind, "~> 0.2.0", runtime: Mix.env() == :dev},
       {:swoosh, "~> 1.3"},
       # {:finch, "~> 0.16"},
-      {:langchain, "~> 0.1.1"},
+      {:langchain, "~> 0.1.2"},
       {:finch, github: "sneako/finch", override: true},
       {:telemetry_metrics, "~> 0.6"},
       {:telemetry_poller, "~> 1.0"},

mix.lock

@@ -26,7 +26,7 @@
   "httpoison": {:hex, :httpoison, "2.1.0", "655fd9a7b0b95ee3e9a3b535cf7ac8e08ef5229bab187fa86ac4208b122d934b", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "fc455cb4306b43827def4f57299b2d5ac8ac331cb23f517e734a4b78210a160c"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
-  "langchain": {:hex, :langchain, "0.1.1", "0140b4cc0d311f56f1c01d5c036e5c387c896cc75da77d70e76878e8a611f2a1", [:mix], [{:abacus, "~> 2.0.0", [hex: :abacus, repo: "hexpm", optional: false]}, {:ecto, "~> 3.10.3", [hex: :ecto, repo: "hexpm", optional: false]}, {:gettext, "~> 0.20", [hex: :gettext, repo: "hexpm", optional: false]}, {:req, "~> 0.3", [hex: :req, repo: "hexpm", optional: false]}], "hexpm", "3fa1ad8a8a7c2f99ce44d8bf73d0c16261551f2fd603c0830872b698ccfbfd42"},
+  "langchain": {:hex, :langchain, "0.1.2", "01b982425bb0679a79ba3aa14f65685be14feb660010c299432e75dd2959f0d2", [:mix], [{:abacus, "~> 2.0.0", [hex: :abacus, repo: "hexpm", optional: false]}, {:ecto, "~> 3.10.3", [hex: :ecto, repo: "hexpm", optional: false]}, {:gettext, "~> 0.20", [hex: :gettext, repo: "hexpm", optional: false]}, {:req, "~> 0.4.4", [hex: :req, repo: "hexpm", optional: false]}], "hexpm", "2c7d089b17fc34abb86c3da5964841d21229872ecad0dbd9c8baa02e7bf6dbeb"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mime": {:hex, :mime, "2.0.5", "dc34c8efd439abe6ae0343edbb8556f4d63f178594894720607772a041b04b02", [:mix], [], "hexpm", "da0d64a365c45bc9935cc5c8a7fc5e49a0e0f9932a761c55d6c52b142780a05c"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},