GUACAMOLE-1807: Update Java dependencies to latest compatible versions.

extensions/guacamole-vault/modules/guacamole-vault-ksm/pom.xml

@@ -38,7 +38,7 @@
     </parent>
 
     <properties>
-        <kotlin.version>1.8.20</kotlin.version>
+        <kotlin.version>1.9.0</kotlin.version>
     </properties>
 
     <dependencies>
@@ -60,7 +60,7 @@
         <dependency>
             <groupId>com.keepersecurity.secrets-manager</groupId>
             <artifactId>core</artifactId>
-            <version>16.5.3</version>
+            <version>16.5.4</version>
 
             <!-- Correct version conflict (different versions across transitive
                 dependencies) -->