setup: Match cerbero version to GStreamer version
setup: Match cerbero version to GStreamer version

Also change the URL to the upstream GStreamer

https://bugzilla.gnome.org/show_bug.cgi?id=742830

GStreamer/cerbero,fluendo/cerbero,atsushieno/cerbero,GStreamer/cerbero,multipath-rtp/cerbero,flexVDI/cerbero,atsushieno/cerbero,centricular/cerbero,multipath-rtp/cerbero,multipath-rtp/cerbero,OptoFidelity/cerbero,fluendo/cerbero,atsushieno/cerbero,justinjoy/cerbero,justinjoy/cerbero,shoreflyer/cerbero,shoreflyer/cerbero,nirbheek/cerbero,fluendo/cerbero,centricular/cerbero,fluendo/cerbero,multipath-rtp/cerbero,flexVDI/cerbero,shoreflyer/cerbero,GStreamer/cerbero,sdroege/cerbero,EricssonResearch/cerbero,centricular/cerbero,centricular/cerbero,atsushieno/cerbero,fluendo/cerbero,sdroege/cerbero,justinjoy/cerbero,GStreamer/cerbero,flexVDI/cerbero,EricssonResearch/cerbero,nirbheek/cerbero,GStreamer/cerbero,sdroege/cerbero,EricssonResearch/cerbero,nirbheek/cerbero,centricular/cerbero,multipath-rtp/cerbero,shoreflyer/cerbero,nirbheek/cerbero,sdroege/cerbero,OptoFidelity/cerbero,flexVDI/cerbero,sdroege/cerbero,justinjoy/cerbero,shoreflyer/cerbero,EricssonResearch/cerbero,flexVDI/cerbero,EricssonResearch/cerbero,OptoFidelity/cerbero,atsushieno/cerbero,OptoFidelity/cerbero