[Security Rules] Update security rules package to v9.2.1 (elastic#15687)

Author: tradebot-elastic

packages/security_detection_engine/changelog.yml

@@ -1,5 +1,10 @@
 # newer versions go on top
 # NOTE: please use pre-release versions (e.g. -beta.0) until a package is ready for production
+- version: 9.2.1
+  changes:
+    - description: Release security rules update
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/15687
 - version: 9.2.1-beta.1
   changes:
     - description: Release security rules update

packages/security_detection_engine/manifest.yml

@@ -22,4 +22,4 @@ source:
   license: Elastic-2.0
 title: Prebuilt Security Detection Rules
 type: integration
-version: 9.2.1-beta.1
+version: 9.2.1