Bump litellm from 1.48.19 to 1.50.0

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.48.19 to 1.50.0.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](BerriAI/litellm@v1.48.19...v1.50.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -11,7 +11,7 @@ python = "^3.11"
 python-dotenv = "^1.0.1"
 tiktoken = "^0.8.0"
 rich = "^13.9.2"
-litellm = "^1.48.19"
+litellm = "^1.50.0"
 tenacity = "^9.0.0"
 numpy = "<2.0"
 networkx = "^3.3"