Update sphinxcontrib-serializinghtml to 1.1.3 (#11747)
Update sphinxcontrib-serializinghtml to 1.1.3 (#11747)

Update sphinxcontrib-serializinghtml to 1.1.3
psiinon/addons-server,diox/olympia,diox/olympia,psiinon/addons-server,wagnerand/addons-server,eviljeff/olympia,mozilla/olympia,eviljeff/olympia,mozilla/addons-server,bqbn/addons-server,eviljeff/olympia,bqbn/addons-server,diox/olympia,mozilla/addons-server,wagnerand/addons-server,mozilla/olympia,mozilla/olympia,bqbn/addons-server,mozilla/addons-server,mozilla/olympia,bqbn/addons-server,mozilla/addons-server,psiinon/addons-server,wagnerand/addons-server,psiinon/addons-server,eviljeff/olympia,diox/olympia,wagnerand/addons-server