Bump policy-apex-pdp to 2.3.1-SNAPSHOT

Change-Id: I59b93fccb0f3a41f8db753d1e8e2978bbb51e9a0
Issue-ID: POLICY-2378
Signed-off-by: a.sreekumar <ajith.sreekumar@est.tech>
diff --git a/services/pom.xml b/services/pom.xml
index fd782eb..3f0b09c 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.onap.policy.apex-pdp</groupId>
         <artifactId>apex-pdp</artifactId>
-        <version>2.3.0-SNAPSHOT</version>
+        <version>2.3.1-SNAPSHOT</version>
     </parent>
 
     <groupId>org.onap.policy.apex-pdp.services</groupId>