refactor: SurrogatesRandomForest RandomForest code to use XGBoost 2

lib/SurrogatesRandomForest/src/SurrogatesRandomForest.jl

@@ -14,7 +14,7 @@ mutable struct RandomForestSurrogate{X, Y, B, L, U, N} <: AbstractSurrogate
 end
 
 function RandomForestSurrogate(x, y, lb::Number, ub::Number; num_round::Int = 1)
-    bst = xgboost(reshape(x, length(x), 1), num_round, label = y)
+    bst = xgboost((reshape(x, length(x), 1), y); num_round)
     RandomForestSurrogate(x, y, bst, lb, ub, num_round)
 end
 
@@ -35,7 +35,7 @@ function RandomForestSurrogate(x, y, lb, ub; num_round::Int = 1)
     for j in 1:length(x)
         X[j, :] = vec(collect(x[j]))
     end
-    bst = xgboost(X, num_round, label = y)
+    bst = xgboost((X, y); num_round)
     RandomForestSurrogate(x, y, bst, lb, ub, num_round)
 end
 
@@ -50,8 +50,7 @@ function add_point!(rndfor::RandomForestSurrogate, x_new, y_new)
         #1D
         rndfor.x = vcat(rndfor.x, x_new)
         rndfor.y = vcat(rndfor.y, y_new)
-        rndfor.bst = xgboost(reshape(rndfor.x, length(rndfor.x), 1), rndfor.num_round,
-                             label = rndfor.y)
+        rndfor.bst = xgboost((reshape(rndfor.x, length(rndfor.x), 1), rndfor.y); num_round = rndfor.num_round)
     else
         n_previous = length(rndfor.x)
         a = vcat(rndfor.x, x_new)
@@ -75,7 +74,7 @@ function add_point!(rndfor::RandomForestSurrogate, x_new, y_new)
         end
         rndfor.x = vcat(rndfor.x, x_new)
         rndfor.y = vcat(rndfor.y, y_new)
-        rndfor.bst = xgboost(X, rndfor.num_round, label = rndfor.y)
+        rndfor.bst = xgboost((X, rndfor.y); num_round = rndfor.num_round)
     end
     nothing
 end