CI: deploy stable PDF on tags
On tags, this will copy the versioned usermanual to project-allpix-squared.web.cern.ch/usermanual/allpix-manual.pdf
where the current stable usermanual also resides.
On tags, this will copy the versioned usermanual to project-allpix-squared.web.cern.ch/usermanual/allpix-manual.pdf
where the current stable usermanual also resides.