Updated '.../torchmin/trustregion/exact.py:67' to resolve the followi…

…ng warning:

"UserWarning: torch.triangular_solve is deprecated in favor of torch.linalg.solve_triangularand will be removed in a future PyTorch release.
torch.linalg.solve_triangular has its arguments reversed and does not return a copy of one of the inputs.
X = torch.triangular_solve(B, A).solution
should be replaced with
X = torch.linalg.solve_triangular(A, B)."

torchmin/trustregion/exact.py

@@ -64,7 +64,7 @@ def _minimize_trust_exact(fun, x0, **trust_region_options):
 
 
 def solve_triangular(A, b, **kwargs):
-    return torch.triangular_solve(b.unsqueeze(1), A, **kwargs)[0].squeeze(1)
+    return torch.linalg.solve_triangular(A, b.unsqueeze(1), **kwargs)[0].squeeze(1)
 
 
 def solve_cholesky(A, b, **kwargs):
@@ -388,4 +388,4 @@ def solve(self, tr_radius):
         self.lambda_current = lambda_current
         self.previous_tr_radius = tr_radius
 
-        return p, hits_boundary
+        return p, hits_boundary