Bump sqlalchemy from 1.3.20 to 1.3.22

Bumps [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) from 1.3.20 to 1.3.22.
- [Release notes](https://github.com/sqlalchemy/sqlalchemy/releases)
- [Changelog](https://github.com/sqlalchemy/sqlalchemy/blob/master/CHANGES)
- [Commits](https://github.com/sqlalchemy/sqlalchemy/commits)

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

requirements.txt

@@ -11,7 +11,7 @@ pytz>=2018.9
 whatthepatch>=0.0.5
 icalevents==0.1.24
 icalendar==4.0.7
-sqlalchemy==1.3.20
+sqlalchemy==1.3.22
 filelock==3.0.12
 alembic==1.4.3
 numpy==1.19.4