pbr!=2.1.0,>=2.0.0 # Apache-2.0
sphinx>=2.0.0,!=2.1.0 # BSD
openstackdocstheme>=2.2.1 # Apache-2.0
stestr>=2.0.0
testtools>=0.9.34
yasfb>=0.5.1

pbr!=2.1.0,>=2.0.0 # Apache-2.0
sphinx>=3.5.1 # BSD
openstackdocstheme>=2.2.1 # Apache-2.0
stestr>=2.0.0
testtools>=0.9.34
yasfb>=0.5.1

Update sphinx to the latest version
Update sphinx to the latest version

Change-Id: I4d23e184e8d0fd770a7bd17fcb9b5ad4c74f114d
