[Security Rules] Update security rules package to v8.19.18-beta.1 (#17984)

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: 8.19.18-beta.1
+  changes:
+    - description: Release security rules update
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/17984
 - version: 8.19.17
   changes:
     - description: Release security rules update