Fix text coverage and update maven version

Author: ethkatnic

pom.xml

@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.amazonaws</groupId>
     <artifactId>dynamodb-lock-client</artifactId>
-    <version>1.2.0</version>
+    <version>1.3.0</version>
     <packaging>jar</packaging>
     <name>Amazon DynamoDB Lock Client</name>
     <url>https://github.com/awslabs/amazon-dynamodb-lock-client</url>

src/test/java/com/amazonaws/services/dynamodbv2/AmazonDynamoDBLockClientTest.java

@@ -464,7 +464,7 @@ public void acquireLock_whenLockAlreadyExistsAndIsNotReleased_andSkipBlockingWai
         item.put("leaseDuration", AttributeValue.builder().s("100").build());
         when(dynamodb.getItem(Mockito.<GetItemRequest>any()))
             .thenReturn(GetItemResponse.builder().item(item).build())
-            .thenReturn(GetItemResponse.builder().build());
+            .thenReturn(GetItemResponse.builder().item(item).build());
         AcquireLockOptions acquireLockOptions = AcquireLockOptions.builder("customer1")
             .withShouldSkipBlockingWait(true)
             .withDeleteLockOnRelease(false).build();