Bump tzinfo-data from 1.2020.2 to 1.2020.3
Bump tzinfo-data from 1.2020.2 to 1.2020.3

Bumps [tzinfo-data](https://github.com/tzinfo/tzinfo-data) from 1.2020.2 to 1.2020.3.
- [Release notes](https://github.com/tzinfo/tzinfo-data/releases)
- [Commits](https://github.com/tzinfo/tzinfo-data/compare/v1.2020.2...v1.2020.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
italia/developers.italia.it,italia/developers.italia.it,italia/developers.italia.it,italia/developers.italia.it