Mark Windows HostProcess Containers KEP as implemented

Signed-off-by: Mark Rossetti <[email protected]>

Author: marosset

keps/sig-windows/1981-windows-privileged-container-support/README.md

@@ -1203,6 +1203,7 @@ For each of them, fill in the following information by copying the below templat
 - **2021-08-21:** HostProcessContainers (via CRI) support added to containerd - [containerd/containerd#5131](https://github.com/containerd/containerd/pull/5131).
 - **2021-12-07:** K8s 1.23 released with beta support for `WindowsHostProcessContainers` feature.
 - **2022-02-15:** Containerd 1.6.0 relased with support for HostProcessContainers.
+- **2022-12-08:** K8s 1.26 released with `WindowsHostProcessContainers` feature stable.
 
 <!--
 Major milestones in the lifecycle of a KEP should be tracked in this section.

keps/sig-windows/1981-windows-privileged-container-support/kep.yaml

@@ -8,7 +8,7 @@ participating-sigs:
   - sig-auth
   - sig-node
   - sig-storage
-status: implementable
+status: implemented
 creation-date: 2020-10-09
 reviewers:
   - "@jsturtevant"