BUG: Attempt to fix random failure of qSlicerSslTest on windows

Execute the event loop just after queuing the request with the
networkAccessManager.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22597 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Sync patch version to match latest stable release

See commit r22599 on Slicer-4-3 branch.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22600 3bd1e089-480b-0410-8dfb-8563597acbee