Make util classes final

Author: Pankaj Agrawal

powertools-logging/src/main/java/software/amazon/lambda/powertools/logging/PowertoolsLogger.java

@@ -22,7 +22,10 @@
  *
  * {@see PowertoolsLogging}
  */
-public class PowertoolsLogger {
+public final class PowertoolsLogger {
+
+    private PowertoolsLogger() {
+    }
 
     /**
      * Appends an additional key and value to each log entry made. Duplicate values

powertools-sqs/src/main/java/software/amazon/lambda/powertools/sqs/PowertoolsSqs.java

@@ -31,10 +31,13 @@
  * <p>
  * {@see PowertoolsLogging}
  */
-public class PowertoolsSqs {
+public final class PowertoolsSqs {
 
     private static final ObjectMapper objectMapper = new ObjectMapper();
 
+    private PowertoolsSqs() {
+    }
+
     /**
      * This is a utility method when you want to avoid using {@code LargeMessageHandler} annotation.
      * Gives you access to enriched messages from S3 in the SQS event produced via extended client lib.
@@ -77,7 +80,7 @@ public static <R> R enrichedMessageFromS3(final SQSEvent sqsEvent,
         return returnValue;
     }
 
-    private static SQSMessage clonedMessage(SQSMessage sqsMessage) {
+    private static SQSMessage clonedMessage(final SQSMessage sqsMessage) {
         try {
             return objectMapper
                     .readValue(objectMapper.writeValueAsString(sqsMessage), SQSMessage.class);