Add new series activity types to API specification for version 2.14 (#342)

* Add new series activity types to API specification for version 2.14

* Fix typo in activity type name from 'macro_updated' to 'macro_update' in API specification for version 2.14

Author: fedefrusc

descriptions/2.14/api.intercom.io.yaml

@@ -14110,7 +14110,7 @@ components:
           - inbox_access_change
           - macro_creation
           - macro_deletion
-          - macro_updated
+          - macro_update
           - malicious_domains_setting_change
           - message_deletion
           - message_state_change
@@ -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