build(deps): bump sqlalchemy from 1.4.45 to 2.0.30

Bumps [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy) from 1.4.45 to 2.0.30.
- [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-major
...

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

demos/blog/requirements.txt

@@ -6,7 +6,7 @@ asyncpgsa==0.27.1
 bcrypt==4.1.3
 pytoml==0.1.21
 redis==5.0.4
-sqlalchemy==1.4.45
+sqlalchemy==2.0.30
 
 # testing
 pytest==8.1.1