Bump golang to v1.21

Signed-off-by: Volker Theile <[email protected]>

.golangci.yaml

@@ -7,13 +7,14 @@ linters:
     - revive
     - gosec
     - prealloc
-run:
-  skip-files:
+issues:
+  exclude-files:
     - /zz_generated_
     - _generated
-  skip-dirs:
+  exclude-dirs:
     - generated
-  deadline: 5m
+run:
+  timeout: 5m
   tests: true
   build-tags:
     - test

go.mod

@@ -47,7 +47,6 @@ require (
 	github.com/stretchr/testify v1.8.2
 	github.com/urfave/cli/v2 v2.3.0
 	golang.org/x/crypto v0.17.0
-	golang.org/x/exp v0.0.0-20231219180239-dc181d75b848
 	k8s.io/api v0.27.1
 	k8s.io/apimachinery v0.27.1
 	k8s.io/client-go v0.27.1
@@ -98,6 +97,7 @@ require (
 	github.com/prometheus/common v0.42.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/exp v0.0.0-20231219180239-dc181d75b848 // indirect
 	golang.org/x/mod v0.14.0 // indirect
 	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/oauth2 v0.13.0 // indirect

pkg/controller/blockdevice/controller.go

@@ -7,14 +7,14 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"slices"
 	"sync"
 	"time"
 
 	gocommon "github.com/harvester/go-common"
 	ghwutil "github.com/jaypipes/ghw/pkg/util"
 	longhornv1 "github.com/longhorn/longhorn-manager/k8s/pkg/apis/longhorn/v1beta2"
 	"github.com/sirupsen/logrus"
-	"golang.org/x/exp/slices"
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"