update CLUSTER_SUPPORT.md with current cluster support information

Signed-off-by: Michael Valdron <mvaldron@redhat.com>

CLUSTER_SUPPORT.md

@@ -5,14 +5,11 @@ systems based on which Operator SDK version the registry operator
 is using as well as the API overlap between OpenShift and 
 Kubernetes. 
 
-|                   | OpenShift 4.12.x |
-|:-----------------:|:----------------:|
-| Kubernetes 1.25.x |        X         |
-| Kubernetes 1.26.x |        X         |
+Operator currently targets Kubernetes 1.29 API and is tested on OpenShift 4.15.
 
 ## Operator SDK
 
-Current version in use by the Registry Operator is [Operator SDK v1.28.0](https://sdk.operatorframework.io/docs/upgrading-sdk-version/v1.28.0/).
+Current version in use by the Registry Operator is [Operator SDK v1.28.0](https://sdk.operatorframework.io/docs/upgrading-sdk-version/v1.28.0/), planned to use [Operator SDK v1.36.0](https://sdk.operatorframework.io/docs/upgrading-sdk-version/v1.36.0/) ([devfile/api#1626](https://github.com/devfile/api/issues/1626)) to be in sync with target Kubernetes 1.29 version.
 
 To update the Operator SDK, refer to [Upgrade SDK Version](https://sdk.operatorframework.io/docs/upgrading-sdk-version/) 
 and change the following