Bumped pyscopg2 version

 Saw error with current version: Error: could not determine PostgreSQL version from '11.7'

Author: Mitalee

requirements.txt

@@ -5,7 +5,7 @@ werkzeug==0.15.3
 gunicorn==19.7.0
 
 # Data and workers.
-psycopg2==2.6.1
+psycopg2>=2.6.1
 Flask-SQLAlchemy==2.3.2
 SQLAlchemy==1.3.1
 alembic==1.0.8
@@ -18,4 +18,4 @@ WTForms-Alchemy==0.16.9
 #rich-text
 flask_ckeditor
 
-pytz
+pytz