[golang] replace golang.org/x/exp/slices with stdlib one

Signed-off-by: Martin Schuppert <mschuppert@redhat.com>

Author: stuggi

go.mod

@@ -15,7 +15,6 @@ require (
 	github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.20250730071847-837b07f8d72f
 	github.com/openstack-k8s-operators/lib-common/modules/openstack v0.6.1-0.20250730071847-837b07f8d72f
 	github.com/openstack-k8s-operators/swift-operator/api v0.3.1-0.20240523121736-379011b2cfac
-	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56
 	k8s.io/api v0.29.15
 	k8s.io/apimachinery v0.29.15
 	k8s.io/client-go v0.29.15
@@ -61,6 +60,7 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
 	golang.org/x/net v0.28.0 // indirect
 	golang.org/x/oauth2 v0.18.0 // indirect
 	golang.org/x/sys v0.23.0 // indirect

pkg/swiftring/funcs.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 	"path/filepath"
+	"slices"
 	"sort"
 	"strings"
 
-	"golang.org/x/exp/slices"
-
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/types"