* <https://github.com/flathub/org.libreoffice.LibreOffice/commit/
  f5d97291e302d98c217c955c52b255795d4d4cad> "Bump runtime-version to
  org.gnome.Platform 3.26"

* <https://github.com/flathub/org.libreoffice.LibreOffice/commit/
  7d69e505165d4bbf5fa0b34b5fb2cbff9dfaf9bd> "For now, bundle gst-libav to be
  able to play mp4 videos in impress"

Change-Id: I1924d84be7fe577e302b0c1b8c7e2971e8583d73