Revert revert LKE Changelog v1.54.0 (#6640)

* edit a moved guide to new section

* Revert "Revert "LKE v1.54.0 Release Notes (#6630)" (#6633)"

This reverts commit 22b4838.

docs/release-notes/lke/v1.54.0.md

@@ -0,0 +1,24 @@
+---
+title: Linode Kubernetes Engine v1.54.0
+date: 2023-09-26
+version: 1.54.0
+---
+
+
+### Changed
+
+- Upgraded clusters using Kubernetes 1.26 to patch version 1.26.9
+
+### Added
+
+- Kubernetes 1.27 is now available on LKE. Review the [Kubernetes changelog](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.27.md) and [blog post](https://kubernetes.io/blog/2023/03/17/upcoming-changes-in-kubernetes-v1-27/).
+
+    Kubernetes 1.27 locks the `LegacyServiceAccountTokenNoAutoGeneration` feature gate that enables the token controller to automatically create API server access tokens for Kubernetes service accounts. After upgrading to 1.27, customers may notice a warning message regarding these legacy tokens:
+
+    ```
+    Warning: Use tokens from the TokenRequest API or manually created secret-based tokens instead of autogenerated secret-based tokens.
+    ```
+
+    To fix this issue, remove any auto-generated secrets of type `kubernetes.io/service-account-token` in the `kube-system` namespace with `kubectl delete secrets -n kube-system --field-selector="type==kubernetes.io/service-account-token"` and regenerate the cluster's Kubeconfig. See the Kubernetes Cluster Regenerate ([(POST /lke/clusters/{clusterId}/regenerate](/docs/api/linode-kubernetes-engine-lke/#kubernetes-cluster-regenerate)) endpoint.
+
+    Customers with service accounts outside of `kube-system` need to delete the auto-generated service account tokens in their respective namespaces.