Avoid Snap dependency when installing Dart Sass in CI (#1189)

Author: edithturn

.github/workflows/pipeline.yaml

@@ -40,7 +40,9 @@ jobs:
           && sudo dpkg -i ${{ runner.temp }}/hugo.deb
 
       - name: Install Dart Sass
-        run: sudo snap install dart-sass
+        run: |
+          npm install -g sass
+          sass --version
 
       - name: Checkout repository
         uses: actions/checkout@v4