Update driver-core/src/test/unit/com/mongodb/internal/time/ExponentialBackoffTest.java

Co-authored-by: Valentin Kovalenko <valentin.male.kovalenko@gmail.com>

Author: nhachicha

driver-core/src/test/unit/com/mongodb/internal/time/ExponentialBackoffTest.java

@@ -21,7 +21,7 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class ExponentialBackoffTest {
+class ExponentialBackoffTest {
     // Expected backoffs with jitter=1.0 and growth factor ExponentialBackoff.TRANSACTION_GROWTH
     private static final double[] EXPECTED_BACKOFFS_MAX_VALUES = {5.0, 7.5, 11.25, 16.875, 25.3125, 37.96875, 56.953125, 85.4296875, 128.14453125,
             192.21679688, 288.32519531, 432.48779297, 500.0};