Bump pytz from 2021.1 to 2021.3

Bumps [pytz](https://github.com/stub42/pytz) from 2021.1 to 2021.3. - [Release notes](https://github.com/stub42/pytz/releases) - [Commits](https://github.com/stub42/pytz/compare/release_2021.1...release_2021.3)

Bump pytz from 2021.1 to 2021.3
Bumps [pytz](https://github.com/stub42/pytz) from 2021.1 to 2021.3. - [Release notes](https://github.com/stub42/pytz/releases) - [Commits](https://github.com/stub42/pytz/compare/release_2021.1...release_2021.3)
57cb1e3b · WKDV Bot · a6d7f9a6 · 57cb1e3b
Commit 57cb1e3b authored 3 years ago by WKDV Bot 🤖
--- a/dios/requirements.txt
+++ b/dios/requirements.txt
 numpy==1.21.2
 pandas==1.3.3
 python-dateutil==2.8.1
-pytz==2021.1
+pytz==2021.3
 six==1.16.0