Add gstreamer1.0-plugins-bad and gstreamer1.0-nice as runtime dependencies
Add gstreamer1.0-plugins-bad and gstreamer1.0-nice as runtime dependencies. (Closes: #1079085)
libervia-backend uses gstreamer elements provided by gstreamer1.0-plugins-bad. gstreamer1.0-nice is required by some elements used by libervia-backend. For more details see #1079085.
Adding these dependencies fixes a couple of tests that are currently failing from autopkgtest. https://ci.debian.net/packages/libe/libervia-backend/testing/amd64/50769228/