Bump pytz from 2025.1 to 2025.2

Bumps [pytz](https://github.com/stub42/pytz) from 2025.1 to 2025.2.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2025.1...release_2025.2)

---
updated-dependencies:
- dependency-name: pytz
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -34,7 +34,7 @@ Pillow==11.1.0  # required by django-imagekit
 psycopg[c]==3.2.6
 cryptography==44.0.2
 python-dateutil==2.9.0.post0
-pytz==2025.1
+pytz==2025.2
 redis==5.2.1
 requests==2.32.3
 sqlalchemy==2.0.40  # Required by Celery broker transport