Set stable-2.9 to the latest Gerrit 2.9.3 release

Change-Id: Ia28cc2db127e6109719b1705edbe1182aa2d8242
diff --git a/its-base/pom.xml b/its-base/pom.xml
index 381789b..b3d5a03 100644
--- a/its-base/pom.xml
+++ b/its-base/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>com.googlesource.gerrit.plugins.its</groupId>
     <artifactId>its-base-parent</artifactId>
-    <version>2.9</version>
+    <version>2.9.3</version>
   </parent>
   <artifactId>its-base</artifactId>
   <name>Gerrit Code Review - Commit validation and Workflow</name>
diff --git a/pom.xml b/pom.xml
index f25d75d..7a1cd1b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
   <groupId>com.googlesource.gerrit.plugins.its</groupId>
   <artifactId>its-base-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.9</version>
+  <version>2.9.3</version>
 
   <name>Gerrit Code Review - Issue tracker support</name>