Fix flake8 and isort errors

Note, isort now has default behaviour of searching recursively so we no
longer need the `-rc` flag

tests/app/main/views/test_two_factor.py

@@ -326,7 +326,7 @@ def test_valid_two_factor_email_link_shows_interstitial(
     assert 'action' not in form
     assert form['method'] == 'post'
     assert form['id'] == expected_form_id
-    assert page.select_one('main script').text.strip() == (
+    assert page.select_one('main script').string.strip() == (
         f'document.getElementById("{expected_form_id}").submit();'
     )