fix: Update to adjust for new scipy.stats.mode behavior.

Previously the default for the `keepdims` parameter was True, but as of
SciPy 1.11.0 it is false. This is actually the behavior we want here
since we only care about the mode value and not other values.

https://docs.scipy.org/doc/scipy/release/1.11.0-notes.html#expired-deprecations

cms/djangoapps/contentstore/api/views/course_quality.py

@@ -272,5 +272,5 @@ def _stats_dict(self, data):  # lint-amnesty, pylint: disable=missing-function-d
                 max=max(data),
                 mean=np.around(np.mean(data)),
                 median=np.around(np.median(data)),
-                mode=stats.mode(data, axis=None)[0][0],
+                mode=stats.mode(data, axis=None)[0],
             )