CI fix warning: inkscape was renamed to homebrew/cask/inkscape

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

.github/workflows/macos-build-and-test.yml

@@ -42,7 +42,7 @@ jobs:
 
       - name: Install Homebrew dependencies
         run: |
-          brew install inkscape
+          brew install homebrew/cask/inkscape
 
       - name: Download Craft
         run: |