Move to final 2.13 release

Change-Id: I2de046be357c853a114fe1e443b4880aee58dff5
diff --git a/github-oauth/pom.xml b/github-oauth/pom.xml
index b387328..a83f50f 100644
--- a/github-oauth/pom.xml
+++ b/github-oauth/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.googlesource.gerrit.plugins.github</groupId>
     <artifactId>github-parent</artifactId>
-    <version>2.13-SNAPSHOT</version>
+    <version>2.13</version>
   </parent>
   <artifactId>github-oauth</artifactId>
   <name>Gerrit Code Review - GitHub OAuth login</name>
diff --git a/github-plugin/pom.xml b/github-plugin/pom.xml
index 28492d2..ae26419 100644
--- a/github-plugin/pom.xml
+++ b/github-plugin/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>github-parent</artifactId>
     <groupId>com.googlesource.gerrit.plugins.github</groupId>
-    <version>2.13-SNAPSHOT</version>
+    <version>2.13</version>
   </parent>
 
   <artifactId>github-plugin</artifactId>
diff --git a/pom.xml b/pom.xml
index b1f12aa..b385eb8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.googlesource.gerrit.plugins.github</groupId>
   <artifactId>github-parent</artifactId>
-  <version>2.13-SNAPSHOT</version>
+  <version>2.13</version>
   <name>Gerrit Code Review - GitHub integration</name>
   <url>http://www.gerritforge.com</url>
   <packaging>pom</packaging>