Merge pull request readthedocs#5395 from rtfd/pyup/scheduled-update-2019-03-04

pyup:  Scheduled weekly dependency update for week 09

Author: humitos

requirements/pip.txt

@@ -1,14 +1,14 @@
 # Base packages
 pip==19.0.3
 appdirs==1.4.3
-virtualenv==16.4.1
+virtualenv==16.4.3
 
 django==1.11.20  # pyup: <1.12
 django-tastypie==0.14.2
 django-guardian==1.5.0
 django-extensions==2.1.6
 
-djangorestframework==3.9.1
+djangorestframework==3.9.2
 
 # For intersphinx during builds
 Sphinx==1.8.4
@@ -22,7 +22,7 @@ jsonfield==2.0.2
 requests==2.21.0
 requests-toolbelt==0.9.1
 slumber==0.7.1
-lxml==4.3.1
+lxml==4.3.2
 defusedxml==0.5.0
 pyyaml==3.13
 Pygments==2.3.1
@@ -36,7 +36,7 @@ redis==2.10.6  # pyup: ignore
 # when ALWAYS_EAGER = True
 celery==4.1.1  # pyup: ignore
 
-django-allauth==0.38.0
+django-allauth==0.39.1
 
 # VCS
 httplib2==0.12.1