fix(deps): update dependency litellm to v1.66.1 (#2205)

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

Author: renovate[bot]

poetry.lock

@@ -85,7 +85,7 @@ pycountry = "^24.6.1"
 qdrant-client = {extras = ["fastembed"], version = "^1.12.0"}
 onnxruntime = "1.21.0"
 openai = "^1.55.3"
-litellm = "1.65.7"
+litellm = "1.66.1"
 langchain = "^0.3.11"
 tiktoken = "^0.9.0"
 llama-index = "^0.12.6"