Revert "chore: upgrade standard packages" due to https://github.com/golangci/golangci-lint/issues/4415

This reverts commit ad0c6d5eb1.

hems/ocpp/ocpp.go

@@ -2,7 +2,7 @@ package ocpp
 
 import (
 	"fmt"
-	"math/rand/v2"
+	"math/rand"
 	"strings"
 	"time"
 
@@ -43,7 +43,7 @@ func New(conf map[string]interface{}, site site.API) (*OCPP, error) {
 		if err == nil {
 			cc.StationID = fmt.Sprintf("evcc-%s", strings.ToLower(id))
 		} else {
-			cc.StationID = fmt.Sprintf("evcc-%d", rand.Uint32())
+			cc.StationID = fmt.Sprintf("evcc-%d", rand.Int31())
 		}
 		log.DEBUG.Println("station id:", cc.StationID)
 	}

provider/mqtt/client.go

@@ -3,7 +3,7 @@ package mqtt
 import (
 	"crypto/tls"
 	"fmt"
-	"math/rand/v2"
+	"math/rand"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -20,7 +20,8 @@ var Instance *Client
 
 // ClientID created unique mqtt client id
 func ClientID() string {
-	return fmt.Sprintf("evcc-%d", rand.Uint32())
+	pid := rand.Int31()
+	return fmt.Sprintf("evcc-%d", pid)
 }
 
 // Config is the public configuration