add test_arraypad.py to TEST_SCOPE

Author: vtavana

.github/workflows/conda-package.yml

@@ -25,6 +25,7 @@ env:
       test_arithmetic.py
       test_arraycreation.py
       test_arraymanipulation.py
+      test_arraypad.py
       test_bitwise.py
       test_copy.py
       test_counting.py