fix: remove deprecated libgthread-2.0-0 package and fix libgdk-pixbuf package name

- Remove libgthread-2.0-0 which is no longer available in current Ubuntu repos
- Fix libgdk-pixbuf-xlib-2.0-0 to libgdk-pixbuf2.0-0 for correct package name
- Resolves Docker build failure with exit code 100

Dockerfile

@@ -10,9 +10,8 @@ RUN apt-get update && apt-get install -y \
     libxext6 \
     libxrender-dev \
     libgomp1 \
-    libgthread-2.0-0 \
     libgtk-3-0 \
-    libgdk-pixbuf-xlib-2.0-0 \
+    libgdk-pixbuf2.0-0 \
     libxss1 \
     libnss3 \
     libxrandr2 \