feat: report the licenses a BMC asks for as facts (0.5.0)

get_licenses (napalm-device-types LicenseMixin, 4.15) on redfish and bmc,
for NetOrk/netork#1111.

- A BMC that refuses Redfish altogether reports each license it names as
  missing, with its message.
- One that answers but withholds parts reports the license with withholds,
  e.g. DCMS withholding drives and the firmware inventory on an X10 with
  only SFT-OOB-LIC.
- ipmi knows no licenses.

get_device_warnings keeps its two codes until netOrk derives them.

CHANGELOG.md

@@ -7,6 +7,21 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.0] - 2026-10-17
+
+### Added
+- `get_licenses` (napalm-device-types `LicenseMixin`, 4.15) on `redfish` and `bmc`: the
+  licenses the BMC asks for, as facts (NetOrk/netork#1111). A BMC that refuses Redfish
+  altogether reports each license it names as `missing`, with its message. One that answers
+  but withholds parts reports the license with `withholds`, e.g. DCMS withholding
+  `drives` and `firmware inventory` on a Supermicro X10 with only SFT-OOB-LIC. `ipmi`
+  knows no licenses and has no `get_licenses`.
+
+### Changed
+- Requires napalm-device-types 4.15 (`LicenseDict.withholds`).
+- `get_device_warnings` still reports `bmc_license_required` / `bmc_license_partial` for
+  callers that do not read `get_licenses` yet; it goes once netOrk derives both.
+
 ## [0.4.0] - 2026-10-17
 
 ### Added