ci: Add Ghostscript and Inkscape to macOS runs

Author: QuLogic

.github/workflows/tests.yml

@@ -161,7 +161,8 @@ jobs:
           macOS)
             brew install ccache
             brew tap homebrew/cask-fonts
-            brew install font-noto-sans-cjk gobject-introspection gtk4 ninja
+            brew install font-noto-sans-cjk ghostscript gobject-introspection gtk4 ninja
+            brew install --cask inkscape
             ;;
           esac