Add Slack Notification Service Trigger for Vulnerability Dismissals
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## Intent
When utilizing GitLab's Slack notification service you may configure **Vulnerability** triggers. With this feature, it would be nice to have further triggers available for further audit visibility around vulnerability dismissals as well.
## Proposal
There should possible be an option for creating a **Vulnerability Dismissal** trigger. This payload should include the “dismissal reason”, the “dismissed at”, and “dismissed by” within GraphQL.
## References
Dismissal of vulnerabilities is stored within the https://docs.gitlab.com/ee/api/project_vulnerabilities.html, and will report within two portions of the object response:
"dismissed_at": null,
"dismissed_by_id": null,
Note that the API is in the process of deprecation, but the same responses can also be generating using the GraphQL API
https://docs.gitlab.com/ee/api/graphql/reference/#fields-757
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