bump sqlalchemy version

frameworks/Python/aiohttp/requirements.txt

@@ -5,6 +5,6 @@ asyncpg==0.15.0
 cchardet==2.1.1
 gunicorn==19.9.0
 psycopg2==2.7.5
-SQLAlchemy==1.1.10
+SQLAlchemy==1.3.0
 ujson==1.35
 uvloop==0.9.1