build(deps): bump pytz from 2025.2 to 2026.1

Bumps [pytz](https://github.com/stub42/pytz) from 2025.2 to 2026.1.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2025.2...release_2026.1)

---
updated-dependencies:
- dependency-name: pytz
  dependency-version: '2026.1'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 discord.py==2.6.4
 Pillow==12.1.1
 xkcd==2.4.2
-pytz==2025.2
+pytz==2026.1
 asyncpg==0.30.0
 python-Levenshtein==0.27.1
 pillow-heif==1.2.1