RO-4367 Update master third-party dependencies

This change is the result of running gating/update_dependencies/*
  See update_dependencies in https://rpc-openstack.atlassian.net/wiki/spaces/RE/pages/19005457/RE+for+Projects for more details.

Author: rpc.jenkins.cit.rackspace.net

upper-constraints.txt

@@ -46,16 +46,16 @@ linecache2===1.0.0
 idna===2.8
 sphinxmark===0.1.19
 openstack-requirements===1.2.0
-Sphinx===1.8.3
-openstackdocstheme===1.29.0
+Sphinx===1.8.4
+openstackdocstheme===1.29.1
 bottle===0.12.16
 pyparsing===2.3.1
 semver===2.8.1
 stevedore===1.30.0
 pyasn1===0.4.5
 pyflakes===1.0.0
 six===1.12.0
-dulwich===0.19.10
+dulwich===0.19.11
 pep8===1.7.1
 GitPython===2.1.11
 ndg-httpsclient===0.5.1