Fix numpy 2.0 compatibility in ILSHADE implementation

Author: firefly-cpp

niapy/algorithms/modified/ilshade.py

@@ -244,7 +244,7 @@ def post_selection(self, pop, arc, arc_ind_cnt, task, xb, fxb, pbest_factor, **k
         max_nfe = task.max_evals
         nfe = task.evals
 
-        next_pop_size = np.int_(np.around((((4.0 - self.population_size) / np.float_(max_nfe)) * nfe) + self.population_size))
+        next_pop_size = np.int_(np.around((((4.0 - self.population_size) / np.float64(max_nfe)) * nfe) + self.population_size))
 
         if next_pop_size < 4:
             next_pop_size = 4