Bump sqlalchemy from 1.2.12 to 1.3.8 (#600)

dependabot-preview[bot] · web-flow · commit 3957cabfa538 · 2019-09-21T11:50:48.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -9,5 +9,5 @@ pytest-cov==2.7.1
 pytest-sugar==0.9.2
 pytest-timeout==1.3.2
 sphinxcontrib-asyncio==0.2.0
-sqlalchemy==1.2.12
+sqlalchemy==1.3.8
 psycopg2==2.7.5
