[log.extension] remove deprecated usage

Signed-off-by: Raymond Augé <raymond.auge@liferay.com>

Author: rotty3000

log.extension/src/main/java/org/apache/felix/log/extension/Activator.java

@@ -31,7 +31,7 @@ public void start(BundleContext context) throws Exception {
         try {
             Class<? extends BundleActivator> activatorClass = context.getBundle().loadClass("org.apache.felix.log.Activator").asSubclass(BundleActivator.class);
 
-            m_felixLogService = activatorClass.newInstance();
+            m_felixLogService = activatorClass.getDeclaredConstructor().newInstance();
 
             m_felixLogService.start(context);
         }
@@ -42,7 +42,7 @@ public void start(BundleContext context) throws Exception {
         try {
             Class<? extends BundleActivator> activatorClass = context.getBundle().loadClass("org.apache.felix.logback.internal.Activator").asSubclass(BundleActivator.class);
 
-            m_felixLogback = activatorClass.newInstance();
+            m_felixLogback = activatorClass.getDeclaredConstructor().newInstance();
 
             m_felixLogback.start(context);
         }