Add dismissed_at field to vulnerability in GraphQL

- Update documentation
- Add changelog

doc/api/graphql/reference/gitlab_schema.graphql

@@ -24871,6 +24871,11 @@ type Vulnerability implements Noteable {
     last: Int
   ): DiscussionConnection!
 
+  """
+  Timestamp of when the vulnerability state was changed to dismissed
+  """
+  dismissedAt: Time
+
   """
   List of external issue links related to the vulnerability
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -72394,6 +72394,20 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "dismissedAt",
+              "description": "Timestamp of when the vulnerability state was changed to dismissed",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "SCALAR",
+                "name": "Time",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "externalIssueLinks",
               "description": "List of external issue links related to the vulnerability",

doc/api/graphql/reference/index.md

@@ -3745,6 +3745,7 @@ Represents a vulnerability.
 | `description` | String | Description of the vulnerability |
 | `detectedAt` | Time! | Timestamp of when the vulnerability was first detected |
 | `discussions` | DiscussionConnection! | All discussions on this noteable |
+| `dismissedAt` | Time | Timestamp of when the vulnerability state was changed to dismissed |
 | `externalIssueLinks` | VulnerabilityExternalIssueLinkConnection! | List of external issue links related to the vulnerability |
 | `id` | ID! | GraphQL ID of the vulnerability |
 | `identifiers` | VulnerabilityIdentifier! => Array | Identifiers of the vulnerability. |

ee/app/graphql/types/vulnerability_type.rb

@@ -71,6 +71,9 @@ module Types
     field :resolved_at, Types::TimeType, null: true,
           description: 'Timestamp of when the vulnerability state was changed to resolved'
 
+    field :dismissed_at, Types::TimeType, null: true,
+          description: 'Timestamp of when the vulnerability state was changed to dismissed'
+
     def user_notes_count
       ::Gitlab::Graphql::Aggregations::Vulnerabilities::LazyUserNotesCountAggregate.new(context, object)
     end

ee/changelogs/unreleased/228740-add-dismissed-at-field.yml

+---
+title: Add dismissed_at field to vulnerability in GraphQL
+merge_request: 49797
+author:
+type: changed

ee/spec/graphql/types/vulnerability_type_spec.rb

@@ -26,6 +26,7 @@ RSpec.describe GitlabSchema.types['Vulnerability'] do
        detected_at
        confirmed_at
        resolved_at
+       dismissed_at
        notes
        external_issue_links
        discussions]