⬆️(deps): Update langchain-litellm requirement

Updates the requirements on [langchain-litellm](https://github.com/langchain-ai/langchain-litellm) to permit the latest version.
- [Release notes](https://github.com/langchain-ai/langchain-litellm/releases)
- [Changelog](https://github.com/langchain-ai/langchain-litellm/blob/main/CHANGELOG.md)
- [Commits](langchain-ai/langchain-litellm@v0.4.0...v0.6.2)

---
updated-dependencies:
- dependency-name: langchain-litellm
  dependency-version: 0.6.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/meeseeks_core/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
   "langchain>=1.0.0,<2.0.0",
   "langchain-core>=1.2.8,<2.0.0",
   "langchain-community>=0.4.1,<0.5.0",
-  "langchain-litellm>=0.4.0,<0.6.0",
+  "langchain-litellm>=0.4.0,<0.7.0",
   "langfuse>=3.8.0,<5.0.0",
   "litellm>=1.81.0,<2.0.0",
   "loguru>=0.7.2,<1.0.0",