Weekday adjustment to use Clarabel instead of ECOS

_delphi_utils_python/delphi_utils/weekday.py

@@ -93,7 +93,7 @@ def _fit(X, scales, npnums, npdenoms):
         for scale in scales:
             try:
                 prob = cp.Problem(cp.Minimize((-ll + lmbda * penalty) / scale))
-                _ = prob.solve()
+                _ = prob.solve(solver=cp.CLARABEL)
                 return b.value
             except SolverError:
                 # If the magnitude of the objective function is too large, an error is

_delphi_utils_python/tests/test_weekday.py

@@ -18,24 +18,11 @@ def test_get_params(self):
 
         result = Weekday.get_params(self.TEST_DATA, "den", ["num"], "date", [1], TEST_LOGGER)
         print(result)
-        expected_result = [
-            -0.05993665,
-            -0.0727396,
-            -0.05618517,
-            0.0343405,
-            0.12534997,
-            0.04561813,
-            -2.27669028,
-            -1.89564374,
-            -1.5695407,
-            -1.29838116,
-            -1.08216513,
-            -0.92089259,
-            -0.81456355,
-            -0.76317802,
-            -0.76673598,
-            -0.82523745,
-        ]
+        expected_result = np.array([[-0.05990542, -0.07272124, -0.05618539,
+                                     0.0343087, 0.1253007, 0.04562494,
+                                    -2.27662546, -1.8956484,  -1.56959677,
+                                    -1.29847058, -1.08226981, -0.92099449,
+                                    -0.81464459, -0.76322013, -0.7667211,-0.8251475]])
         assert np.allclose(result, expected_result)
 
     def test_calc_adjustment_with_zero_parameters(self):