Adding one more test case

Author: the-yash-rajput

src/test/java/com/thealgorithms/physics/DampedOscillatorTest.java

@@ -1,6 +1,8 @@
 package com.thealgorithms.physics;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;