GUACAMOLE-1794: Merge update of KSM SDK to 16.5.3.

diff --git a/doc/licenses/ksm-sdk-16.5.2/dep-coordinates.txt b/doc/licenses/ksm-sdk-16.5.2/dep-coordinates.txt
deleted file mode 100644
index bc1871d..0000000
--- a/doc/licenses/ksm-sdk-16.5.2/dep-coordinates.txt
+++ /dev/null
@@ -1 +0,0 @@
-com.keepersecurity.secrets-manager:core:jar:16.5.2
diff --git a/doc/licenses/ksm-sdk-16.5.2/LICENSE b/doc/licenses/ksm-sdk-16.5.3/LICENSE
similarity index 100%
rename from doc/licenses/ksm-sdk-16.5.2/LICENSE
rename to doc/licenses/ksm-sdk-16.5.3/LICENSE
diff --git a/doc/licenses/ksm-sdk-16.5.2/README b/doc/licenses/ksm-sdk-16.5.3/README
similarity index 76%
rename from doc/licenses/ksm-sdk-16.5.2/README
rename to doc/licenses/ksm-sdk-16.5.3/README
index bf48205..027a6ad 100644
--- a/doc/licenses/ksm-sdk-16.5.2/README
+++ b/doc/licenses/ksm-sdk-16.5.3/README
@@ -2,8 +2,8 @@
 (https://github.com/Keeper-Security/secrets-manager)
 ----------------------------------------------------
 
-    Version: 16.5.2
+    Version: 16.5.3
     From: 'Keeper Security' (https://www.keepersecurity.com/)
     License(s):
-        MIT (bundled/ksm-sdk-16.5.2/LICENSE)
+        MIT (bundled/ksm-sdk-16.5.3/LICENSE)
 
diff --git a/doc/licenses/ksm-sdk-16.5.3/dep-coordinates.txt b/doc/licenses/ksm-sdk-16.5.3/dep-coordinates.txt
new file mode 100644
index 0000000..6e3b036
--- /dev/null
+++ b/doc/licenses/ksm-sdk-16.5.3/dep-coordinates.txt
@@ -0,0 +1 @@
+com.keepersecurity.secrets-manager:core:jar:16.5.3
diff --git a/extensions/guacamole-vault/modules/guacamole-vault-ksm/pom.xml b/extensions/guacamole-vault/modules/guacamole-vault-ksm/pom.xml
index 9bbdc09..bfc8510 100644
--- a/extensions/guacamole-vault/modules/guacamole-vault-ksm/pom.xml
+++ b/extensions/guacamole-vault/modules/guacamole-vault-ksm/pom.xml
@@ -60,7 +60,7 @@
         <dependency>
             <groupId>com.keepersecurity.secrets-manager</groupId>
             <artifactId>core</artifactId>
-            <version>16.5.2</version>
+            <version>16.5.3</version>
 
             <!-- Correct version conflict (different versions across transitive
                 dependencies) -->