GUACAMOLE-519: fix api endpoint forwarding to use logout address

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/resources/openidModule.js

@@ -31,7 +31,7 @@ angular.module('guacSsoOpenid').run(['$rootScope', '$window',
 
     // Redirect to SSO logout endpoint when user logs out
     $rootScope.$on('guacLogout', function handleLogout() {
-        $window.location.href = 'api/ext/sso/logout';
+        $window.location.href = 'api/ext/openid/logout';
     });
 
 }]);

pom.xml

@@ -39,7 +39,7 @@
         referenced by this and all other pom.xml files within guacamole-client,
         and is a special case within Maven as one of the few properties allowed
         within the pom.xml version and intended for this purpose) -->
-        <revision>1.6.1</revision>
+        <revision>1.6.0</revision>
 
         <!-- Dependency versions -->
         <guava.version>32.1.3-jre</guava.version>