Updated human-device mapping deprecation info (#28653)

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

<!-- Note that API documentation changes are now addressed by the
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- [ ] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files)
for more information.
- [ ] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements)
- [ ] Added support on fleet's osquery simulator `cmd/osquery-perf` for
new osquery data ingestion features.
- [ ] If paths of existing endpoints are modified without backwards
compatibility, checked the frontend/CLI for any necessary changes
- [ ] If database migrations are included, checked table schema to
confirm autoupdate
- For database migrations:
- [ ] Checked schema for all modified table for columns that will
auto-update timestamps during migration.
- [ ] Confirmed that updating the timestamps is acceptable, and will not
cause unwanted side effects.
- [ ] Ensured the correct collation is explicitly set for character
columns (`COLLATE utf8mb4_unicode_ci`).
- [ ] Added/updated automated tests
- [ ] A detailed QA plan exists on the associated ticket (if it isn't
there, work with the product group's QA engineer to add it)
- [ ] Manual QA for all new/changed functionality
- For Orbit and Fleet Desktop changes:
- [ ] Make sure fleetd is compatible with the latest released version of
Fleet (see [Must
rule](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/fleetd-development-and-release-strategy.md)).
- [ ] Orbit runs on macOS, Linux and Windows. Check if the orbit
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- [ ] Auto-update manual QA, from released version of component to new
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- [ ] For unreleased bug fixes in a release candidate, confirmed that
the fix is not expected to adversely impact load test results or alerted
the release DRI if additional load testing is needed.

docs/REST API/rest-api.md

@@ -2241,8 +2241,6 @@ None.
 - [Transfer hosts to a team by filter](#transfer-hosts-to-a-team-by-filter)
 - [Turn off MDM for a host](#turn-off-mdm-for-a-host)
 - [Batch-delete hosts by filter or ids](#batch-delete-hosts-by-filter-or-ids)
-- [Get human-device mapping](#get-human-device-mapping)
-- [Update custom human-device mapping](#update-custom-human-device-mapping)
 - [Get host's device health report](#get-hosts-device-health-report)
 - [Get host's mobile device management (MDM) information](#get-hosts-mobile-device-management-mdm-information)
 - [Get mobile device management (MDM) summary](#get-mobile-device-management-mdm-summary)
@@ -3049,7 +3047,7 @@ Returns the information of the specified host.
 > - `fleet_desktop_version: ""` means this agent is a fleetd agent but does not have fleet desktop
 > - `scripts_enabled: null` means this agent is not a fleetd agent, or this agent is version <=1.23.0 which is not collecting the scripts enabled info
 
-> Note: [Get human-device mapping](https://github.com/fleetdm/fleet/blob/62dc32454f6a40e81fe229abdfc370d3bf7a56c6/docs/REST%20API/rest-api.md?plain=1#L3518) and [Update custom human-device mapping endpoints](https://github.com/fleetdm/fleet/blob/62dc32454f6a40e81fe229abdfc370d3bf7a56c6/docs/REST%20API/rest-api.md?plain=1#L3564) are deprecated. End user information is available as part of the [Get host](#get-host) endpoint.
+> Note: [Get human-device mapping](https://github.com/fleetdm/fleet/blob/62dc32454f6a40e81fe229abdfc370d3bf7a56c6/docs/REST%20API/rest-api.md?plain=1#L3518) and [Update custom human-device mapping endpoints](https://github.com/fleetdm/fleet/blob/62dc32454f6a40e81fe229abdfc370d3bf7a56c6/docs/REST%20API/rest-api.md?plain=1#L3564) are deprecated as of Fleet 4.67.0. They are maintained for backwards compatibility. Please use the [Get host](#get-host) endpoint to get human-device mapping.
 
 ### Get host by identifier