fix: adapt test_views_rendered.py

Signed-off-by: sudipto baral <sudiptobaral.me@gmail.com>

tests/www/views/test_views_rendered.py

@@ -215,7 +215,7 @@ def test_user_defined_filter_and_macros_raise_error(admin_client, create_dag_run
     resp = admin_client.get(url, follow_redirects=True)
     assert resp.status_code == 200
 
-    resp_html: str = resp.data.decode("utf-8")
+    resp_html: str = resp.text
     assert "echo Hello Apache Airflow" not in resp_html
     assert (
         "Webserver does not have access to User-defined Macros or Filters when "