release: bump version to v0.2.10 (#1391)

<!-- .github/pull_request_template.md -->

## 📌 Description

Bump version to v0.2.10 for GPT-OSS Support:
#1389

## 🔍 Related Issues

- #1389 
- https://openai.com/index/introducing-gpt-oss/

## 🚀 Pull Request Checklist

Thank you for contributing to FlashInfer! Before we review your pull
request, please make sure the following items are complete.

### ✅ Pre-commit Checks

- [x] I have installed `pre-commit` by running `pip install pre-commit`
(or used your preferred method).
- [x] I have installed the hooks with `pre-commit install`.
- [x] I have run the hooks manually with `pre-commit run --all-files`
and fixed any reported issues.

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## 🧪 Tests

- [x] Tests have been added or updated as needed.
- [x] All tests are passing (`unittest`, etc.).

---------

Co-authored-by: yzh119 <[email protected]>

Author: yzh119

version.txt

@@ -1 +1 @@
-0.2.9
+0.2.10