Use dismissed_{at,by} instead of closed_{at,by}

Change all occurrences of closed_{at,by} in Vulnerabilities-related
code to reflect the database changes.

ee/app/models/vulnerability.rb

@@ -20,7 +20,7 @@ class Vulnerability < ApplicationRecord
   belongs_to :updated_by, class_name: 'User'
   belongs_to :last_edited_by, class_name: 'User'
   belongs_to :resolved_by, class_name: 'User'
-  belongs_to :closed_by, class_name: 'User'
+  belongs_to :dismissed_by, class_name: 'User'
   belongs_to :confirmed_by, class_name: 'User'
 
   has_many :findings, class_name: 'Vulnerabilities::Occurrence', inverse_of: :vulnerability

ee/app/services/vulnerabilities/dismiss_service.rb

@@ -23,7 +23,7 @@ module Vulnerabilities
           raise ActiveRecord::Rollback
         end
 
-        @vulnerability.update(state: Vulnerability.states[:dismissed], closed_by: @user, closed_at: Time.current)
+        @vulnerability.update(state: Vulnerability.states[:dismissed], dismissed_by: @user, dismissed_at: Time.current)
       end
 
       @vulnerability

ee/lib/ee/api/entities.rb

@@ -926,7 +926,7 @@ module EE
         expose :updated_by_id
         expose :last_edited_by_id
         expose :resolved_by_id
-        expose :closed_by_id
+        expose :dismissed_by_id
 
         expose :start_date
         expose :due_date
@@ -935,7 +935,7 @@ module EE
         expose :updated_at
         expose :last_edited_at
         expose :resolved_at
-        expose :closed_at
+        expose :dismissed_at
       end
 
       class VulnerabilityRelatedIssue < ::API::Entities::IssueBasic

ee/spec/factories/vulnerabilities.rb

@@ -21,7 +21,7 @@ FactoryBot.define do
 
     trait :dismissed do
       state { Vulnerability.states[:dismissed] }
-      closed_at { Time.current }
+      dismissed_at { Time.current }
     end
 
     trait :confirmed do

ee/spec/models/vulnerability_spec.rb

@@ -36,7 +36,7 @@ describe Vulnerability do
     it { is_expected.to belong_to(:updated_by).class_name('User') }
     it { is_expected.to belong_to(:last_edited_by).class_name('User') }
     it { is_expected.to belong_to(:resolved_by).class_name('User') }
-    it { is_expected.to belong_to(:closed_by).class_name('User') }
+    it { is_expected.to belong_to(:dismissed_by).class_name('User') }
     it { is_expected.to belong_to(:confirmed_by).class_name('User') }
 
     it { is_expected.to have_many(:findings).class_name('Vulnerabilities::Occurrence').dependent(false) }

ee/spec/requests/api/vulnerabilities_spec.rb

@@ -199,7 +199,7 @@ describe API::Vulnerabilities do
           expect(response).to match_response_schema('public_api/v4/vulnerability', dir: 'ee')
 
           expect(vulnerability.reload).to(
-            have_attributes(state: 'dismissed', closed_by: user, closed_at: be_like_time(Time.current)))
+            have_attributes(state: 'dismissed', dismissed_by: user, dismissed_at: be_like_time(Time.current)))
           expect(vulnerability.findings).to all have_vulnerability_dismissal_feedback
         end
       end

ee/spec/services/vulnerabilities/dismiss_service_spec.rb

@@ -26,7 +26,7 @@ describe Vulnerabilities::DismissService do
         dismiss_vulnerability
 
         expect(vulnerability.reload).to(
-          have_attributes(state: 'dismissed', closed_by: user, closed_at: be_like_time(Time.current)))
+          have_attributes(state: 'dismissed', dismissed_by: user, dismissed_at: be_like_time(Time.current)))
         expect(vulnerability.findings).to all have_vulnerability_dismissal_feedback
       end
     end