remove x/exp

maps.Values() is in the standard library now, except it returns an
iterator instead of a slice.

cache/cache.go

@@ -21,11 +21,11 @@ package cache
 
 import (
 	"encoding/json"
+	"maps"
+	"slices"
 	"sync"
 	"time"
 
-	"golang.org/x/exp/maps"
-
 	"github.com/sapcc/maintenance-controller/state"
 )
 
@@ -58,5 +58,5 @@ func (nic *nodeInfoCacheImpl) JSON() ([]byte, error) {
 	// pointers, which in turn open up for data races
 	nic.mutex.Lock()
 	defer nic.mutex.Unlock()
-	return json.Marshal(maps.Values(nic.nodes))
+	return json.Marshal(slices.Collect(maps.Values(nic.nodes)))
 }

go.mod

@@ -16,7 +16,6 @@ require (
 	github.com/slack-go/slack v0.15.0
 	github.com/vmware/govmomi v0.47.0
 	go.uber.org/zap v1.27.0
-	golang.org/x/exp v0.0.0-20250106191152-7588d65b2ba8
 	gopkg.in/ini.v1 v1.67.0
 	k8s.io/api v0.31.1
 	k8s.io/apimachinery v0.31.1
@@ -64,6 +63,7 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/exp v0.0.0-20250106191152-7588d65b2ba8 // indirect
 	golang.org/x/net v0.34.0 // indirect
 	golang.org/x/oauth2 v0.24.0 // indirect
 	golang.org/x/sys v0.29.0 // indirect