community/polari: add some missing dependencies
Required for the app to work. Taken from the flatpak manifest: https://gitlab.gnome.org/GNOME/polari/-/blob/main/flatpak/org.gnome.Polari.json
Required for the app to work. Taken from the flatpak manifest: https://gitlab.gnome.org/GNOME/polari/-/blob/main/flatpak/org.gnome.Polari.json