[FFM-9809] - 1.3.1 release prep (#167)

What
Update various metadata files for release 1.3.1

Author: andybharness

README.md

@@ -78,14 +78,14 @@ Add the following Maven dependency in your project's pom.xml file:
 <dependency>
     <groupId>io.harness</groupId>
     <artifactId>ff-java-server-sdk</artifactId>
-    <version>1.3.0</version>
+    <version>1.3.1</version>
 </dependency>
 ```
 
 #### Gradle
 
 ```
-implementation 'io.harness:ff-java-server-sdk:1.3.0'
+implementation 'io.harness:ff-java-server-sdk:1.3.1'
 ```
 
 ### Code Sample

examples/pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.harness.featureflags</groupId>
     <artifactId>examples</artifactId>
-    <version>1.3.1-SNAPSHOT</version>
+    <version>1.3.1</version>
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>
@@ -33,7 +33,7 @@
         <dependency>
             <groupId>io.harness</groupId>
             <artifactId>ff-java-server-sdk</artifactId>
-            <version>1.3.1-SNAPSHOT</version>
+            <version>1.3.1</version>
         </dependency>
 
         <dependency>

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.harness</groupId>
     <artifactId>ff-java-server-sdk</artifactId>
-    <version>1.3.1-SNAPSHOT</version>
+    <version>1.3.1</version>
     <packaging>jar</packaging>
     <name>Harness Feature Flag Java Server SDK</name>
     <description>Harness Feature Flag Java Server SDK</description>