mopidy: add gstreamer + PyGObject apt deps

mopidy needs:
- gstreamer plugins (good/bad/ugly for audio formats)
- libgirepository + gir bindings (PyGObject) for gi module
- gstreamer-1.0 gir bindings for gst module

infra/mopidy/Dockerfile

@@ -3,16 +3,21 @@
 
 FROM python:3.12-slim-bookworm
 
-# System deps for mopidy + extensions + GStreamer playback
+# System deps for mopidy + extensions + GStreamer playback + PyGObject
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
       gstreamer1.0-tools \
       gstreamer1.0-plugins-good \
       gstreamer1.0-plugins-bad \
+      gstreamer1.0-plugins-ugly \
       libcairo2 \
       libpango-1.0-0 \
       libpangoft2-1.0-0 \
       libgirepository1.0-dev \
+      libgirepository-2.0-0 \
+      gir1.2-glib-2.0 \
+      gir1.2-gstreamer-1.0 \
+      gir1.2-gst-plugins-base-1.0 \
  && rm -rf /var/lib/apt/lists/*
 
 RUN pip install --no-cache-dir \