chore(deps): update dependency pytz to v2026 (#502)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [pytz](http://pythonhosted.org/pytz) | `==2025.2` → `==2026.1.post1` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/pytz/2026.1.post1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pytz/2025.2/2026.1.post1?slim=true) |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My40Ni42IiwidXBkYXRlZEluVmVyIjoiNDMuNDYuNiIsInRhcmdldEJyYW5jaCI6ImRldmVsb3AiLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: https://codeberg.org/umati/Sample-Server-asyncio/pulls/502
Co-authored-by: umati-bot <[email protected]>
Co-committed-by: umati-bot <[email protected]>

Author: umati-bot

requirements.txt

@@ -12,7 +12,7 @@ pycparser==3.0
 pyinstaller==6.19.0
 pyinstaller-hooks-contrib==2026.2
 python-dateutil==2.9.0.post0
-pytz==2025.2
+pytz==2026.1.post1
 pywin32-ctypes==0.2.3
 six==1.17.0
 typing-extensions==4.15.0