Add new series activity types to API specification for version 2.14

Author: fedefrusc

descriptions/2.14/api.intercom.io.yaml

@@ -14132,6 +14132,11 @@ components:
           - seat_change
           - seat_revoke
           - security_settings_change
+          - series_creation
+          - series_deletion
+          - series_settings_update
+          - series_status_change
+          - series_update
           - strip_inbound_email_links_change
           - temporary_expectation_change
           - team_assignment_limit_change