Updating Python Requirements

requirements/edx/base.txt

@@ -201,7 +201,7 @@ python-dateutil==2.4.0
 python-levenshtein==0.12.0
 python-memcached==1.59
 python-slugify==4.0.0     # via code-annotations
-python-swiftclient==3.8.1
+python-swiftclient==3.9.0
 python3-openid==3.1.0 ; python_version >= "3"
 python3-saml==1.5.0
 pytz==2019.3

requirements/edx/development.txt

@@ -258,7 +258,7 @@ python-dateutil==2.4.0
 python-levenshtein==0.12.0
 python-memcached==1.59
 python-slugify==4.0.0
-python-swiftclient==3.8.1
+python-swiftclient==3.9.0
 python3-openid==3.1.0 ; python_version >= "3"
 python3-saml==1.5.0
 pytz==2019.3
@@ -316,7 +316,7 @@ unidiff==0.5.5
 uritemplate==3.0.1
 urllib3==1.25.8
 user-util==0.1.5
-virtualenv==20.0.3
+virtualenv==20.0.4
 voluptuous==0.11.7
 vulture==1.3
 watchdog==0.10.2

requirements/edx/testing.txt

@@ -246,7 +246,7 @@ python-dateutil==2.4.0
 python-levenshtein==0.12.0
 python-memcached==1.59
 python-slugify==4.0.0
-python-swiftclient==3.8.1
+python-swiftclient==3.9.0
 python3-openid==3.1.0 ; python_version >= "3"
 python3-saml==1.5.0
 pytz==2019.3
@@ -294,7 +294,7 @@ unidiff==0.5.5
 uritemplate==3.0.1
 urllib3==1.25.8
 user-util==0.1.5
-virtualenv==20.0.3        # via tox
+virtualenv==20.0.4        # via tox
 voluptuous==0.11.7
 watchdog==0.10.2
 wcwidth==0.1.8            # via pytest