fix sonar

kstreamplify-spring-boot/src/test/java/com/michelin/kstreamplify/opentelemetry/OpenTelemetryConfigTest.java

@@ -15,7 +15,7 @@
  * The OpenTelemetry configuration test class.
  */
 @ExtendWith(MockitoExtension.class)
-public class OpenTelemetryConfigTest {
+class OpenTelemetryConfigTest {
     private final OpenTelemetryConfig openTelemetryConfig = new OpenTelemetryConfig();
 
     @Test