Update CHANGELOG-EE.md for 13.12.0-ee

[ci skip]

ee/changelogs/unreleased/327015-vuln-issue-link.yml

----
-title: Check if an issue is already linked to the same vulnerability before creating
-  the issue link
-merge_request: 60753
-author:
-type: fixed

ee/changelogs/unreleased/327020-saml-enforcement-by-default-if-enabled-2.yml

----
-title: Default enable SSO-only authentication for web activity and add warning if
-  it is disabled
-merge_request: 60868
-author:
-type: changed

ee/changelogs/unreleased/327020-saml-enforcement-by-default-if-enabled.yml

----
-title: Convert SAML setting toggles to checkboxes and update UI text
-merge_request: 59823
-author:
-type: changed

ee/changelogs/unreleased/327028-enable-sec_secret_detection_ui_enable-by-default.yml

----
-title: Add the ability to automatically create a basic configuration MR for Secret Detection via the Security Configuration page
-merge_request: 58687
-author:
-type: added

ee/changelogs/unreleased/327043-remove-ultimate-trial-banner-for-users-that-are-not-already-a-g.yml

----
-title: Remove ultimate trial banner for users that are not already a group admin
-merge_request: 59611
-author:
-type: changed

ee/changelogs/unreleased/327044-migrate-to-gl-spinner.yml

----
-title: Migrate spinner class to gl-spinner class
-merge_request: 58706
-author:
-type: changed

ee/changelogs/unreleased/327239-engineering-increase-invite-acceptance-by-removing-exit-ctas-2.yml

----
-title: Fix trial registration terms message
-merge_request: 61162
-author:
-type: fixed

ee/changelogs/unreleased/327382-render-value-type.yml

----
-title: Render text and value generic report types on vulnerability report
-merge_request: 61727
-author:
-type: added

ee/changelogs/unreleased/327486-api-fuzzing-labels-updates.yml

----
-title: Update API Fuzzing form labels
-merge_request: 61267
-author:
-type: changed

ee/changelogs/unreleased/327508-move-defaults-to-script-apifuzz.yml

----
-title: Move API Fuzzing variable defaults into script
-merge_request: 60171
-author:
-type: changed

ee/changelogs/unreleased/327508-pin-version-apifuzzing.yml

----
-title: Pin API Fuzzing CI template to v1
-merge_request: 60057
-author:
-type: changed

ee/changelogs/unreleased/327508-remove-dnd-job-apifuzzing.yml

----
-title: Remove docker-in-docker job from API Fuzzing CI template
-merge_request: 60054
-author:
-type: removed

ee/changelogs/unreleased/327656-add-group-devops-adoption-usage-ping.yml

----
-title: Add group level DevOps adoption usage ping
-merge_request: 59738
-author:
-type: added

ee/changelogs/unreleased/327743-pin-version-dastapi.yml

----
-title: Pin DAST API to major version 1
-merge_request: 60068
-author:
-type: changed

ee/changelogs/unreleased/328465-send-version.yml

----
-title: Sync gitlab version during seat link
-merge_request: 60362
-author:
-type: changed

ee/changelogs/unreleased/328481-pipelines-artifact-download-part-2.yml

----
-title: Artifact download migration to graphql
-merge_request: 61169
-author:
-type: changed

ee/changelogs/unreleased/328706-add-diff-component-to-report-item.yml

----
-title: Add diff component to generic report schemas
-merge_request: 60188
-author:
-type: added

ee/changelogs/unreleased/328838-user-admin-provisioned.yml

----
-title: Add provisioned by group info in user admin
-merge_request: 60315
-author:
-type: added

ee/changelogs/unreleased/329128-update-image-dastapi.yml

----
-title: Use SECURE_ANALYZERS_PREFIX in DAST API image URL
-merge_request: 60308
-author:
-type: changed

ee/changelogs/unreleased/329155-dast-api-template.yml

----
-title: Add DAST API CI template
-merge_request: 60546
-author:
-type: added