Replace wrong yaml package usage (#484)

Co-authored-by: Robert Kaussow <mail@thegeeklab.de>

Author: stackit-ske

go.mod

@@ -19,7 +19,6 @@ require (
 	github.com/stackitcloud/stackit-sdk-go/services/iaas v1.3.0
 	github.com/stackitcloud/stackit-sdk-go/services/loadbalancer v1.7.0
 	go.uber.org/mock v0.6.0
-	go.yaml.in/yaml/v2 v2.4.3
 	golang.org/x/sync v0.19.0
 	golang.org/x/sys v0.40.0
 	google.golang.org/grpc v1.78.0
@@ -118,6 +117,7 @@ require (
 	go.opentelemetry.io/proto/otlp v1.5.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/crypto v0.44.0 // indirect
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect

pkg/stackit/client.go

@@ -29,7 +29,7 @@ import (
 	oapiError "github.com/stackitcloud/stackit-sdk-go/core/oapierror"
 	"github.com/stackitcloud/stackit-sdk-go/services/iaas"
 	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
-	"go.yaml.in/yaml/v2"
+	"gopkg.in/yaml.v3"
 	"k8s.io/apimachinery/pkg/util/wait"
 
 	"github.com/stackitcloud/cloud-provider-stackit/pkg/version"