deps: Update dependency types-pytz to v2025 (#527)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [types-pytz](https://redirect.github.com/python/typeshed)
([changelog](https://redirect.github.com/typeshed-internal/stub_uploader/blob/main/data/changelogs/pytz.md))
| `==2024.2.0.20241003` -> `==2025.1.0.20250204` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/types-pytz/2025.1.0.20250204?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/types-pytz/2025.1.0.20250204?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/types-pytz/2024.2.0.20241003/2025.1.0.20250204?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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llm_demo/requirements.txt

@@ -11,7 +11,7 @@ types-Markdown==3.7.0.20240822
 uvicorn[standard]==0.31.0
 python-multipart==0.0.18
 pytz==2024.2
-types-pytz==2024.2.0.20241003
+types-pytz==2025.1.0.20250204
 langgraph==0.2.48
 httpx==0.27.2
 pandas-stubs==2.2.2.240807