Update CHANGELOG-EE.md for 13.10.0-ee

[ci skip]

ee/changelogs/unreleased/260388-sort-metrics-reports-in-widget.yml

----
-title: Sort changed metrics first in metrics reports MR widget
-merge_request: 54729
-author:
-type: changed

ee/changelogs/unreleased/262859-restrict-oncall-rotation-to-interval.yml

----
-title: Restrict on-call to certain times during rotations via GraphQL
-merge_request: 52998
-author:
-type: added

ee/changelogs/unreleased/263497-update-details-schema-for-finding.yml

----
-title: Update details JSON Schema and GraphQL Schema for Vulnerability Finding
-merge_request: 54423
-author:
-type: fixed

ee/changelogs/unreleased/263819-update-severity-counts-after-bulk-update.yml

----
-title: Refetch count list when vulnerabilities are updated
-merge_request: 56116
-author:
-type: fixed

ee/changelogs/unreleased/267509-make-file-path-link.yml

----
-title: Make vulnerability file path linkable in the vulnerability list
-merge_request: 55356
-author:
-type: changed

ee/changelogs/unreleased/273133-report_secondary_metrics_in_usage_ping.yml

----
-title: Add Geo node status metrics to usage ping
-merge_request: 53665
-author:
-type: added

ee/changelogs/unreleased/273573-remove-multiple_http_integrations_custom_mapping-ff.yml

----
-title: Custom mapping for HTTP endpoints
-merge_request: 56021
-author:
-type: added

ee/changelogs/unreleased/275818-be-add-info-error-messages-to-security-widget-summary-up-to-date.yml

----
-title: Add securityReportsUpToDateOnTargetBranch field to MergeRequestType to indicate
-  if the security reports are up to date on the target branch
-merge_request: 53907
-author:
-type: changed

ee/changelogs/unreleased/276694-migrate-lfs_object_registry-to-use-geo-replicableregistry.yml

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-title: Migrate lfs_object_registry to be compatible with Geo::ReplicableRegistry
-merge_request: 52636
-author:
-type: changed

ee/changelogs/unreleased/277328_use_only_uuid_to_pick_correct_finding_from_the_reports.yml

----
-title: Select security findings by their UUIDs instead of their positions in the report
-  artifacts
-merge_request: 55643
-author:
-type: changed

ee/changelogs/unreleased/27934-approval-settings-api-fix.yml

----
-title: Allow project admin to read approval rules from archived projects
-merge_request: 55929
-author:
-type: fixed

ee/changelogs/unreleased/281721-adjust-vuln-modal-column-width.yml

----
-title: Fix alignment issues in vulnerability modals
-merge_request: 55716
-author:
-type: fixed

ee/changelogs/unreleased/281835_expired_certificate_error_hard_failure.yml

----
-title: Disable repository mirroring for hard failures
-merge_request: 54964
-author:
-type: added

ee/changelogs/unreleased/283889-fix-spacing-license-compliance-mr-widget.yml

----
-title: Fix License Compliance widget button spacing
-merge_request: 54701
-author:
-type: other

ee/changelogs/unreleased/283971-fix-geo-database-load-balancer.yml

----
-title: 'Geo: adds database load balancing support to work on standby clusters'
-merge_request: 53147
-author:
-type: added

ee/changelogs/unreleased/284056-fix-vulnerabilities-is-undefined-error-on-vulnerability-list.yml

----
-title: Fix console-error on vulnerabilities report
-merge_request: 56076
-author:
-type: fixed

ee/changelogs/unreleased/284381-group-code-coverage-query.yml

----
-title: Fix group code coverage table to show all projects correctly
-merge_request: 56124
-author:
-type: fixed

ee/changelogs/unreleased/285476-add-icons-to-trends-chart.yml

----
-title: Add toolbox for the trends chart in project security dashboard
-merge_request: 56316
-author:
-type: added

ee/changelogs/unreleased/287631-fix-wrong-message-for-vulnerability-report.yml

----
-title: Fix wrong message for group vulnerability report when no vulnerabilities in projects
-merge_request: 55464
-author:
-type: fixed

ee/changelogs/unreleased/287631-update-security-dashboard-empty-states.yml

----
-title: Improve security dashboard/vulnerability report empty state messages
-merge_request: 55489
-author:
-type: changed