Add compatibility matrix

Author: GitHub Actions

artifacts/attributes.adoc

@@ -85,6 +85,10 @@
 :gke-short: GKE
 :gcp-brand-name: Google Cloud Platform
 :gcp-short: GCP
+:aro-brand-name: Azure Red Hat Openshift
+:aro-short: ARO
+:rosa-brand-name: Red Hat Openshift Service on AWS
+:rosa-short: ROSA
 
 // Release Notes
 :rn-product-title: Release notes for Red Hat Developer Hub

modules/release-notes/ref-release-notes-compatibility-matrix.adoc

@@ -23,19 +23,5 @@ The following table lists products and their versions compatible with {product-s
 
 - {gke-brand-name} ({gke-short})
 | `{product-backstage-version}`
-| `1.3`
-|
-- {ocp-brand-name} `4.14`-`4.16`
-
-- {eks-brand-name} ({eks-short})
-
-- {aks-brand-name} ({aks-short})
-
-- {aro-brand-name} ({aro-short})
-
-- {rosa-brand-name} ({rosa-short})
-
-- {gke-brand-name} ({gke-short})
-| `1.29`
 |===