Update sphinx.yml

Including sphinx version to Build HTML step

Author: mg-andrews

.github/workflows/sphinx.yml

@@ -14,9 +14,7 @@ jobs:
     - name: Install dependencies
       run: pip install -r requirements.txt
     - name: Build HTML
-      uses: ammaraskar/sphinx-action@master
-      with:
-        source_directory: docs/source
+      uses: ammaraskar/[email protected]
     - name: Upload artifacts
       uses: actions/upload-artifact@v4
       with: