Bump litellm from 1.39.5 to 1.40.0 (#2256)

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.39.5 to 1.40.0.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](https://github.com/BerriAI/litellm/compare/v1.39.5...v1.40.0)

---
updated-dependencies:
- dependency-name: litellm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

poetry.lock

@@ -2627,13 +2627,13 @@ types-tqdm = "*"
 
 [[package]]
 name = "litellm"
-version = "1.39.5"
+version = "1.40.0"
 description = "Library to easily interface with LLM API providers"
 optional = false
 python-versions = "!=2.7.*,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,!=3.7.*,>=3.8"
 files = [
-    {file = "litellm-1.39.5-py3-none-any.whl", hash = "sha256:1e8dd43c5d257fa8d7a0039b20aed7aeed4463d53608d1ba4ac233f1967a5330"},
-    {file = "litellm-1.39.5.tar.gz", hash = "sha256:8f4ea9fe21d67890e81a578e12c30b4172260ff35971dc7c3edf7eb69167d3be"},
+    {file = "litellm-1.40.0-py3-none-any.whl", hash = "sha256:c3055767ae144585699fdb07b3ad678e66738c2eff19abd7761c8fe22d6e636f"},
+    {file = "litellm-1.40.0.tar.gz", hash = "sha256:12b4c0ad850ede5aebdb2f48e3a8e898efb25df5bc915ff89929ad963cb92f54"},
 ]
 
 [package.dependencies]