Update CHANGELOG
The upstream 1.16 API moved ahead due to [patch releases](https://github.com/kubernetes/sig-release/blob/master/releases/patch-releases.md).
The logs are gathered from the upstream [CHANGELOG](https://raw.githubusercontent.com/kubernetes/kubernetes/master/CHANGELOG/CHANGELOG-1.16.md).
# v12.0.0a1-snapshot
-Kubernetes API Version: 1.16.9
+Kubernetes API Version: 1.16.11
**API Change:**
+- Resolve regression in metadata.managedFields handling in update/patch requests submitted by older API clients ([#91748](https://github.com/kubernetes/kubernetes/pull/91748), [@apelisse](https://github.com/apelisse)) [SIG API Machinery and Testing]
+- Fix bug where sending a status update completely wipes managedFields for some types. ([#90033](https://github.com/kubernetes/kubernetes/pull/90033), [@apelisse](https://github.com/apelisse)) [SIG API Machinery and Testing]
- The `MutatingWebhookConfiguration` and `ValidatingWebhookConfiguration` APIs have been promoted to `admissionregistration.k8s.io/v1`:
- `failurePolicy` default changed from `Ignore` to `Fail` for v1
- `matchPolicy` default changed from `Exact` to `Equivalent` for v1
@@ -423,4 +425,3 @@ be deprecated as and when Kubernetes version v1.15 gets deprecated.
# v1.0.0-alpha1
Skipped because of a failed initial release.
-
