🌱 Update metadata and matrix for release-0.4 (#202)

**What is the purpose of this pull request/Why do we need it?**

**Issue #, if available:**

**Description of changes:**

**Special notes for your reviewer:**

**Checklist:**
- [x] Documentation updated
- [x] Includes
[emojis](https://github.com/kubernetes-sigs/kubebuilder-release-tools?tab=readme-ov-file#kubebuilder-project-versioning)

Author: jriedel-ionos

README.md

@@ -47,6 +47,7 @@ This provider's versions are compatible with the following versions of Cluster A
 |------------------------|:--------------------------:|
 | CAPIC v1alpha1 (v0.2)  |             ✓              |
 | CAPIC v1alpha1 (v0.3)  |             ✓              |
+| CAPIC v1alpha1 (v0.4)  |             ✓              |
 
 ### Kubernetes Versions 
 

clusterctl-settings.json

@@ -2,6 +2,6 @@
   "name": "infrastructure-ionoscloud",
   "config": {
     "componentsFile": "infrastructure-components.yaml",
-    "nextVersion": "v0.3.0"
+    "nextVersion": "v0.4.0"
   }
 }

metadata.yaml

@@ -2,6 +2,9 @@
 apiVersion: clusterctl.cluster.x-k8s.io/v1alpha3
 kind: Metadata
 releaseSeries:
+- major: 0
+  minor: 4
+  contract: v1beta1
 - major: 0
   minor: 3
   contract: v1beta1

test/e2e/config/ionoscloud.yaml

@@ -41,7 +41,7 @@ providers:
   - name: ionoscloud
     type: InfrastructureProvider
     versions:
-      - name: v0.3.99
+      - name: v0.4.99
         value: "../../../config/default"
         replacements:
           - old: ghcr.io/ionos-cloud/cluster-api-provider-ionoscloud:dev