build(deps): bump litellm from 1.52.1 to 1.70.0

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.52.1 to 1.70.0.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](https://github.com/BerriAI/litellm/commits)

---
updated-dependencies:
- dependency-name: litellm
  dependency-version: 1.70.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -15,7 +15,7 @@ tqdm = "4.67.1"
 urllib3 = "2.4.0"
 huggingface-hub = "0.31.2"
 datasets = "3.6.0"
-litellm = "1.65.4"
+litellm = "1.70.0"
 PyYAML = ">=6.0.1"
 click = ">=8.1.7"