Bump the python-dependencies group with 1 update

Updates the requirements on [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) to permit the latest version.
- [Release notes](https://github.com/sqlalchemy/sqlalchemy/releases)
- [Changelog](https://github.com/sqlalchemy/sqlalchemy/blob/main/CHANGES.rst)
- [Commits](https://github.com/sqlalchemy/sqlalchemy/commits)

---
updated-dependencies:
- dependency-name: sqlalchemy
  dependency-type: direct:production
  dependency-group: python-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -30,7 +30,7 @@ notifier = "quota_notifier.cli:Application.execute"
 [tool.poetry.dependencies]
 python = ">=3.8"
 pydantic-settings = "2.0.3"
-sqlalchemy = "2.0.20"
+sqlalchemy = "2.0.21"
 
 [tool.poetry.group.tests]
 optional = true