Update pytz requirement from ~=2022.7 to ~=2025.1

Updates the requirements on [pytz](https://github.com/stub42/pytz) to permit the latest version.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2022.7...release_2025.1)

---
updated-dependencies:
- dependency-name: pytz
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Pipfile

@@ -8,7 +8,7 @@ name = "pypi"
 PyGithub = "~=1.58"
 GitPython = "~=3.1"
 # Markdown visualization modules:
-pytz = "~=2022.7"
+pytz = "~=2025.1"
 humanize = "~=4.6"
 # Graphs drawing modules:
 matplotlib = "~=3.7"