Update sphinx job

.github/workflows/sphinx.yml

@@ -18,6 +18,5 @@ jobs:
           pip install --upgrade --requirement ur_documentation/requirements.txt
         shell: bash
       - name: Build documentation using sphinx
-        uses: ammaraskar/sphinx-action@master
-        with:
-          docs-folder: "./ur_documentation/docs"
+        run: |
+          TZ=UTC sphinx-build ur_documentation/docs/source _build