Updating Python Requirements

requirements/base.txt

@@ -35,4 +35,4 @@ semantic-version==2.8.2   # via edx-drf-extensions
 shortuuid==0.5.0          # via edx-django-oauth2-provider
 six==1.12.0               # via django-simple-history, edx-drf-extensions, edx-opaque-keys, pyjwkest, python-dateutil, stevedore
 stevedore==1.31.0         # via edx-opaque-keys
-urllib3==1.25.5           # via requests
+urllib3==1.25.6           # via requests

test-requirements.txt

@@ -11,7 +11,7 @@ chardet==3.0.4
 click-log==0.1.8          # via edx-lint
 click==7.0                # via click-log, edx-lint
 configparser==4.0.2       # via importlib-metadata, pylint
-contextlib2==0.5.5        # via importlib-metadata
+contextlib2==0.6.0        # via importlib-metadata
 coverage==4.5.4
 ddt==1.1.0
 django-model-utils==3.2.0
@@ -42,7 +42,7 @@ more-itertools==5.0.0     # via zipp
 newrelic==5.0.2.126
 nose==1.3.7
 packaging==19.2           # via tox
-pathlib2==2.3.4           # via importlib-metadata
+pathlib2==2.3.5           # via importlib-metadata
 pbr==5.4.3
 pep8==1.7.1
 pillow==6.1.0
@@ -54,7 +54,7 @@ pyjwkest==1.3.2
 pyjwt==1.7.1
 pylint-celery==0.3        # via edx-lint
 pylint-django==0.7.2      # via edx-lint
-pylint-plugin-utils==0.5  # via pylint-celery, pylint-django
+pylint-plugin-utils==0.6  # via pylint-celery, pylint-django
 pylint==1.7.6             # via edx-lint, pylint-celery, pylint-django, pylint-plugin-utils
 pymongo==3.9.0
 pyparsing==2.4.2          # via packaging
@@ -71,7 +71,7 @@ stevedore==1.31.0
 text-unidecode==1.3       # via faker
 toml==0.10.0              # via tox
 tox==3.14.0
-urllib3==1.25.5
+urllib3==1.25.6
 virtualenv==16.7.5        # via tox
 wrapt==1.11.2             # via astroid
 zipp==0.6.0               # via importlib-metadata