ensure propack tests are also run on aarch

recipe/meta.yaml

@@ -93,7 +93,7 @@ test:
     {% set label = "'fast'" if (aarch64 or ppc64le or python_impl == "pypy") else "'full'" %}
     # aarch tests ran in reduced form on drone due to timing constraints;
     # going back to the full test suite will need some debugging of hangs
-    {% set tests = "['scipy.linalg', 'scipy.fft']" if aarch64 else "None" %}
+    {% set tests = "['scipy.linalg', 'scipy.fft', 'scipy.sparse']" if aarch64 else "None" %}
     # for signature of scipy.test see below (note default: label='fast'):
     # https://github.com/scipy/scipy/blob/v1.7.0/scipy/_lib/_testutils.py#L27
     {% set param = "verbose=2, label=" + label + ", tests=" + tests %}