chore: update clippy lints (#272)

* chore: fix clippy lints
---------

Co-authored-by: Luis Moreno <morenol@users.noreply.github.com>

src/linear/bg_solver.rs

@@ -160,7 +160,7 @@ mod tests {
     fn bg_solver() {
         let a = DenseMatrix::from_2d_array(&[&[25., 15., -5.], &[15., 18., 0.], &[-5., 0., 11.]]);
         let b = vec![40., 51., 28.];
-        let expected = vec![1.0, 2.0, 3.0];
+        let expected = [1.0, 2.0, 3.0];
 
         let mut x = Vec::zeros(3);
 

src/linear/logistic_regression.rs

@@ -890,11 +890,7 @@ mod tests {
 
         let y_hat = lr.predict(&x).unwrap();
 
-        let error: i32 = y
-            .into_iter()
-            .zip(y_hat.into_iter())
-            .map(|(a, b)| (a - b).abs())
-            .sum();
+        let error: i32 = y.into_iter().zip(y_hat).map(|(a, b)| (a - b).abs()).sum();
 
         assert!(error <= 1);