switch back to previous libreoffice mirror site
switch back to previous libreoffice mirror site

 * OSU only keeps the most recent release, causing our image builds to
   fail after a patch version release.  Switch back to
   documentfoundation.org's mirror which keeps historical releases.

felliott/modular-file-renderer,CenterForOpenScience/modular-file-renderer,CenterForOpenScience/modular-file-renderer,felliott/modular-file-renderer,felliott/modular-file-renderer,CenterForOpenScience/modular-file-renderer,felliott/modular-file-renderer,CenterForOpenScience/modular-file-renderer