bump requests to resolve compatibility issues w urllib3 v1.24

requirements-docs.txt

@@ -7,7 +7,7 @@
 acme==0.27.1
 alabaster==0.7.12         # via sphinx
 alembic-autogenerate-enums==0.0.2
-alembic==1.0.0
+alembic==1.0.1
 amqp==2.3.2
 aniso8601==3.0.2
 arrow==0.12.1
@@ -20,7 +20,7 @@ blinker==1.4
 boto3==1.7.79
 botocore==1.10.84
 celery[redis]==4.2.1
-certifi==2018.8.24
+certifi==2018.10.15
 cffi==1.11.5
 chardet==3.0.4
 click==7.0
@@ -44,7 +44,7 @@ gunicorn==19.9.0
 idna==2.7
 imagesize==1.1.0          # via sphinx
 inflection==0.3.1
-itsdangerous==0.24
+itsdangerous==1.0.0
 jinja2==2.10
 jmespath==0.9.3
 josepy==1.1.0
@@ -59,7 +59,7 @@ mock==2.0.0
 ndg-httpsclient==0.5.1
 packaging==18.0           # via sphinx
 paramiko==2.4.2
-pbr==4.3.0
+pbr==5.0.0
 pem==18.2.0
 psycopg2==2.7.5
 pyasn1-modules==0.2.2
@@ -78,7 +78,7 @@ pyyaml==3.13
 raven[flask]==6.9.0
 redis==2.10.6
 requests-toolbelt==0.8.0
-requests[security]==2.19.1
+requests[security]==2.20.0
 retrying==1.3.3
 s3transfer==0.1.13
 six==1.11.0
@@ -87,7 +87,7 @@ sphinx-rtd-theme==0.4.2
 sphinx==1.8.1
 sphinxcontrib-httpdomain==1.7.0
 sphinxcontrib-websupport==1.1.0  # via sphinx
-sqlalchemy-utils==0.33.5
+sqlalchemy-utils==0.33.6
 sqlalchemy==1.2.12
 tabulate==0.8.2
 urllib3==1.23