Adds new ml-commons system indices to the list (#3973)

### Description
Adds renamed ml-commons systems indices to the list of existing system
indices. This change is required so that security plugin correctly
recognizes the new indices as system indices.

* Category - Maintenance

Signed-off-by: Xun Zhang <xunzh@amazon.com>

src/main/java/org/opensearch/security/tools/democonfig/SecuritySettingsConfigurer.java

@@ -55,6 +55,8 @@ public class SecuritySettingsConfigurer {
         ".plugins-ml-task",
         ".plugins-ml-conversation-meta",
         ".plugins-ml-conversation-interactions",
+        ".plugins-ml-memory-meta",
+        ".plugins-ml-memory-message",
         ".opendistro-alerting-config",
         ".opendistro-alerting-alert*",
         ".opendistro-anomaly-results*",