Bump pytz from 2020.1 to 2020.4 (#1069)
Bump pytz from 2020.1 to 2020.4 (#1069)

Bumps [pytz](https://github.com/stub42/pytz) from 2020.1 to 2020.4.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2020.1...release_2020.4)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
pajlada/tyggbot,pajlada/pajbot,pajlada/pajbot,pajlada/pajbot,pajlada/tyggbot,pajlada/tyggbot,pajlada/pajbot,pajlada/tyggbot