chore(deps): bump pytz from 2025.2 to 2026.1.post1

Bumps [pytz](https://github.com/stub42/pytz) from 2025.2 to 2026.1.post1.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2025.2...release_2026.1.post1)

---
updated-dependencies:
- dependency-name: pytz
  dependency-version: 2026.1.post1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pyproject.toml

@@ -7,7 +7,7 @@ dependencies = [
     "github3-py==4.0.1",
     "numpy==2.4.2",
     "python-dotenv==1.2.1",
-    "pytz==2025.2",
+    "pytz==2026.1.post1",
     "requests==2.32.5",
 ]