PyYAML security patch

Deps upgraded for SECURITY:

PyYAML==3.13->4.2b4

Deps upgraded to be up to date:

auth0-python==3.3.0->3.6.1
boto3==1.7.77->1.9.80
botocore==1.10.77->1.12.80
cachetools==2.1.0->3.0.0
certifi==2018.8.13->2018.11.29
cryptography==2.3.1->2.4.2
Django==2.1.2->2.1.5
django-extensions==2.1.4->2.1.4
djangorestframework==3.8.2->3.9.1
elasticsearch-dsl==6.2.1->6.3.1
future==0.17.1->0.17.1
google-auth==1.5.1->1.6.2
idna==2.7->2.8
kubernetes==6.0.0->8.0.1
MarkupSafe==1.0->1.1.0
psycopg2==2.7.5->2.7.6.1
py==1.5.4->1.7.0
pycparser==2.18->2.19
pytest==3.7.1->3.10.1
pytest-django==3.3.3->3.4.5
python-dateutil==2.7.3->2.7.5
python-jose[cryptography]==3.0.0->3.0.1
pytz==2018.5->2018.9
raven==6.9.0->6.10.0
requests==2.20.0->2.21.0
rsa==3.4.2->4.0
six==1.11.0->1.12.0
urllib3==1.23->1.24.1

Other:

• Fix psycopg2 warning over module rename #421