Bump bigcommerce-api-python to 0.22.0

Author: bookernath

requirements.txt

@@ -4,7 +4,7 @@ Werkzeug==2.0.1
 itsdangerous==2.0.1
 requests==2.25.1
 python-dotenv==0.17.1
-bigcommerce==0.20.1
+bigcommerce==0.22.0
 gunicorn==20.1.0
 psycopg2==2.8.6
 Flask-SQLAlchemy==2.5.1