Update pyproject.toml version to 0.6.1 (#838)

## Summary
- Bump version to 0.6.1

## Testing Done
- N/A

Author: shimizust

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "liger_kernel"
-version = "0.6.0"
+version = "0.6.1"
 description = "Efficient Triton kernels for LLM Training"
 urls = { "Homepage" = "https://github.com/linkedin/Liger-Kernel" }
 readme = { file = "README.md", content-type = "text/markdown" }