Prepare release 1.2.3 (#66)

* Set Java Object Mapper version to 1.2.3.

* Modify README compatibility table versions.

Author: roimenashe

README.md

@@ -38,8 +38,8 @@
 
 |`java-object-mapper` Version | Aerospike Client | Aerospike Reactor Client
 | :----------- | :----------- | :-----------
-| 1.2.0 | 5.1.x | 5.0.x
-| 1.1.0 | 5.0.x | 
+| 1.2.x | 5.1.x | 5.0.x
+| 1.1.x | 5.0.x | 
 
 # Motivation and a simple example
 Consider a simple class:

pom.xml

@@ -5,7 +5,7 @@
 
 	<groupId>com.aerospike</groupId>
 	<artifactId>java-object-mapper</artifactId>
-	<version>1.2.2</version>
+	<version>1.2.3</version>
 	<packaging>jar</packaging>
 
 	<name>Aerospike Object Mapper</name>