chore(deps): bump sqlalchemy from 2.0.32 to 2.0.38 in /backend

Bumps [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) from 2.0.32 to 2.0.38.
- [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>

backend/requirements.txt

@@ -13,7 +13,7 @@ async-timeout
 aiocache
 aiofiles
 
-sqlalchemy==2.0.32
+sqlalchemy==2.0.38
 alembic==1.14.0
 peewee==3.17.8
 peewee-migrate==1.12.2