Bump sqlalchemy from 1.4.18 to 1.4.19 (#4709)

Bumps [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) from 1.4.18 to 1.4.19.
- [Release notes](https://github.com/sqlalchemy/sqlalchemy/releases)
- [Changelog](https://github.com/sqlalchemy/sqlalchemy/blob/master/CHANGES)
- [Commits](https://github.com/sqlalchemy/sqlalchemy/commits)

---
updated-dependencies:
- dependency-name: sqlalchemy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -37,7 +37,7 @@ python-dateutil==2.8.1
 pytz==2021.1
 redis==3.5.3
 requests==2.25.1
-sqlalchemy==1.4.18  # Required by Celery broker transport
+sqlalchemy==1.4.19  # Required by Celery broker transport
 supervisor==4.2.2
 urllib3==1.26.5
 uWSGI==2.0.19.1