Bump sqlalchemy from 2.0.15 to 2.0.18

Bumps [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) from 2.0.15 to 2.0.18.
- [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
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -40,7 +40,7 @@ requests-oauthlib==1.3.1
 schematics==2.1.1
 sentry-sdk[flask]==1.26.0
 shapely==2.0.1
-SQLAlchemy==2.0.15
+SQLAlchemy==2.0.18
 Werkzeug==2.3.4
 # Dev dependencies (stuff useful for development)
 black==23.3.0