Install llm instead of langchain

Author: malkoG

pyproject.toml

@@ -9,9 +9,7 @@ dependencies = [
     "django>=5.1.7",
     "gunicorn>=23.0.0",
     "httpx>=0.28.1",
-    "langchain>=0.3.23",
-    "langchain-community>=0.3.21",
-    "langchain-openai>=0.3.14",
+    "llm>=0.24.2",
     "lxml>=5.3.2",
     "markdown>=3.7",
     "psycopg[binary]>=3.2.5",