Bump Gerrit and module to v3.6.6

Change-Id: Id56ec283151a6957af5aaa5da3ec743cf830dc5e
diff --git a/pom.xml b/pom.xml
index 546d78f..e417e12 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.gerritforge</groupId>
     <artifactId>global-refdb</artifactId>
-    <version>3.6.3.4</version>
+    <version>3.6.6</version>
     <packaging>jar</packaging>
 
     <name>global-refdb</name>
@@ -38,7 +38,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <gerrit.version>3.6.3</gerrit.version>
+        <gerrit.version>3.6.6</gerrit.version>
     </properties>
 
     <dependencies>