MM-30450: Pre-pacakge Incident Management v1.2.0 (#16576)

Makefile

@@ -95,7 +95,7 @@ PLUGIN_PACKAGES += mattermost-plugin-antivirus-v0.1.2
 PLUGIN_PACKAGES += mattermost-plugin-jira-v2.3.2
 PLUGIN_PACKAGES += mattermost-plugin-gitlab-v1.1.0
 PLUGIN_PACKAGES += mattermost-plugin-jenkins-v1.0.0
-PLUGIN_PACKAGES += mattermost-plugin-incident-management-v1.1.1
+PLUGIN_PACKAGES += mattermost-plugin-incident-management-v1.2.0
 PLUGIN_PACKAGES += mattermost-plugin-channel-export-v0.2.2
 
 # Prepares the enterprise build if exists. The IGNORE stuff is a hack to get the Makefile to execute the commands outside a target