fix: update deprecated APIs for chonkie v1.4.0 and qdrant-client v1.16.0

[zhixiangxue]

🔧 Changes

This PR addresses breaking changes and deprecations from upstream dependencies:

1. Chonkie API Update (v1.4.0)

• Issue: Breaking change in chonkie v1.4.0 removes tokenizer_or_token_counter parameter
• Reference: https://github.com/chonkie-inc/chonkie/releases/tag/v1.4.0
• Change: Rename tokenizer_or_token_counter → tokenizer in SentenceChunker
• File: src/memos/chunkers/sentence_chunker.py

2. Qdrant Client API Update (v1.16.0)

• Issue: Deprecated search() method removed in qdrant-client v1.16.0 (#1103)
• Reference: https://github.com/qdrant/qdrant-client/releases/tag/v1.16.0
• Change: Replace client.search() with client.query_points().points
• File: src/memos/vec_dbs/qdrant.py

3. Python Datetime Deprecation

• Issue: datetime.utcnow() deprecated in Python 3.12+
• Change: Replace with datetime.now(timezone.utc)
• File: src/memos/mem_os/core.py

4. Dependency Version Updates

• chonkie: >=1.0.7 → >=1.4.0
• qdrant-client: >=1.14.2 → >=1.16.0

✅ Testing

• Tested with chonkie v1.4.0
• Tested with qdrant-client v1.16.0
• All affected components working as expected

📚 References

• Chonkie v1.4.0 Release Notes: https://github.com/chonkie-inc/chonkie/releases/tag/v1.4.0
• Qdrant Client v1.16.0 Release Notes: https://github.com/qdrant/qdrant-client/releases/tag/v1.16.0

[fridayL]

need add some version compatibility code
and I will merge this pr

[fridayL]

I think can not make direct changes package version , because our production environment uses chonkie >=1.0.7 and chonkie <1.4.0 versions. Changing the code and version requirements means the old environment will break , causing production system errors.
My suggestion is to add some version compatibility , check the chonkie version first and then add appropriate parameters.
Although this makes the code redundant, the system needs a transitional version.

我觉得这里不可以直接进行更改，因为我们内部的线上环境是使用的chonkie >=1.0.7 and chonkie <1.4.0版本，代码以及版本更改意味着老的环境会立即失效导致线上系统报错
我的建议是做一些版本兼容，或者判断一下版本然后传参数，虽然这样代码很冗余，但系统需要有个过渡版本

[zhixiangxue]

Modified as suggested with try-except for version compatibility:
Try new API (v1.4.0+) first, fallback to legacy API on failure
Reverted pyproject.toml chonkie version to >=1.0.7,<2.0.0 for production compatibility
Code pushed, please review 🙏

[fridayL]

nice
but code check error

just Run poetry lock to fix the lock file before commit code

[zhixiangxue]

done~