Update dependency litellm to v1.76.0 (#2469)

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

Author: renovate[bot]

poetry.lock

@@ -58,7 +58,7 @@ jedi = "^0.19.0"
 langchain = "^0.3.11"
 langchain-experimental = "^0.3.4"
 langchain-openai = "^0.3.2"
-litellm = "1.74.14"
+litellm = "1.76.0"
 llama-index = "^0.13.0"
 llama-index-llms-openai = "^0.5.0"
 lxml = "^6.0.0"