fix(deps): update dependency llama-index-llms-openai to ^0.4.0 (#2331)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

poetry.lock

@@ -59,7 +59,7 @@ langchain-openai = "^0.3.2"
 litellm = "1.73.6"
 llama-index = "^0.12.6"
 llama-index-agent-openai = "^0.4.1"
-llama-index-llms-openai = "^0.3.12"
+llama-index-llms-openai = "^0.4.0"
 lxml = "^5.0.0"
 markdown = "^3.7"
 markdown2 = "^2.4.8"