fix(kubernetes):change capabilities to readwrite (#2354)

Signed-off-by: sdischer-sap <129972012+sdischer-sap@users.noreply.github.com>

pkg/provider/kubernetes/provider.go

@@ -87,7 +87,7 @@ func init() {
 }
 
 func (p *Provider) Capabilities() esv1beta1.SecretStoreCapabilities {
-	return esv1beta1.SecretStoreReadOnly
+	return esv1beta1.SecretStoreReadWrite
 }
 
 // NewClient constructs a Kubernetes Provider.