Bump pytz from 2024.1 to 2024.2 in /docker/py3-tools

Bumps [pytz](https://github.com/stub42/pytz) from 2024.1 to 2024.2.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2024.1...release_2024.2)

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

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