ci: replace removed gnome-icon-theme brew formula with adwaita-icon-theme

Author: feuerste

.github/workflows/aravis-macos.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install dependencies
       run: |
         brew update
-        brew install meson ninja gcc gettext intltool libxml2 libusb gstreamer gnome-icon-theme gobject-introspection glib
+        brew install meson ninja gcc gettext intltool libxml2 libusb gstreamer adwaita-icon-theme gobject-introspection glib
     - name: Build
       run: |
         meson setup --buildtype=plain -Ddocumentation=disabled -Dgst-plugin=enabled -Dintrospection=disabled -Dusb=enabled -Dviewer=enabled -Dgentl-producer=true . ./build