Update requirements
Update requirements

Sync with global requirements to update to newer versions.

Main updates are for our theme and tools.

Change-Id: I71b70229b93ccfdba393718f2fbf9163427aed7d
Depends-On: Ifc5512c0e2373cf3387e0e0498268eab092e52bb

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals