[Auditbeat] system/socket: Add changelog entry (elastic#13445) (elast…

…ic#13456)

Relates elastic#13058

(cherry picked from commit e8c1479)

CHANGELOG.next.asciidoc

@@ -22,6 +22,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Auditd module: Normalized value of `event.category` field from `user-login` to `authentication`. {pull}11432[11432]
 - Auditd module: Unset `auditd.session` and `user.audit.id` fields are removed from audit events. {issue}11431[11431] {pull}11815[11815]
 - Socket dataset: Exclude localhost by default {pull}11993[11993]
+- Socket dataset: New implementation using Kprobes for finer-grained monitoring and UDP support. {pull}13058[13058]
 
 *Filebeat*