Apply clang-format

Author: shreeya-g10

src/test/java/com/thealgorithms/backtracking/UniquePermutationTest.java

@@ -1,9 +1,9 @@
 package com.thealgorithms.backtracking;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import java.util.Arrays;
 import java.util.List;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
 
 public class UniquePermutationTest {