[WFLY-12591] Upgrade spullara mustache to 0.9.6
[WFLY-12591] Upgrade spullara mustache to 0.9.6

rhusar/wildfly,rhusar/wildfly,jstourac/wildfly,iweiss/wildfly,pferraro/wildfly,wildfly/wildfly,rhusar/wildfly,rhusar/wildfly,jstourac/wildfly,jstourac/wildfly,iweiss/wildfly,wildfly/wildfly,pferraro/wildfly,iweiss/wildfly,pferraro/wildfly,wildfly/wildfly,wildfly/wildfly,iweiss/wildfly,jstourac/wildfly,pferraro/wildfly