[Security Rules] Update security rules package to v8.19.21-beta.1#18594

shashank-elastic merged 2 commits into

backport-security_detection_engine-8.19elastic/integrations:backport-security_detection_engine-8.19from

detection-rules/8.19.21-beta.1-f8a08a45eelastic/integrations:detection-rules/8.19.21-beta.1-f8a08a45eCopy head branch name to clipboard