Bump sqlalchemy from 1.2.10 to 1.2.11 in /{{cookiecutter.app_name}}

Bumps [sqlalchemy](https://bitbucket.org/zzzeek/sqlalchemy) from 1.2.10 to 1.2.11.
- [Changelog](https://bitbucket.org/zzzeek/sqlalchemy/src/master/CHANGES)
- [Commits](https://bitbucket.org/zzzeek/sqlalchemy/commits)

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

{{cookiecutter.app_name}}/requirements/prod.txt

@@ -11,7 +11,7 @@ click>=5.0
 # Database
 Flask-SQLAlchemy==2.3.2
 psycopg2==2.7.5
-SQLAlchemy==1.2.10
+SQLAlchemy==1.2.11
 
 # Migrations
 Flask-Migrate==2.2.1