Update dependency llama-index-llms-openai to ^0.5.0

Author: renovate[bot]

pyproject.toml

@@ -61,7 +61,7 @@ langchain-openai = "^0.3.2"
 litellm = "1.74.14"
 llama-index = "^0.12.6"
 llama-index-agent-openai = "^0.4.1"
-llama-index-llms-openai = "^0.4.0"
+llama-index-llms-openai = "^0.5.0"
 lxml = "^5.0.0"
 markdown = "^3.7"
 markdown2 = "^2.4.8"