Chance supported minimal Go version back to 1.20 (#514)

cmd/csaf_downloader/forwarder.go

@@ -12,13 +12,14 @@ import (
 	"bytes"
 	"crypto/tls"
 	"io"
-	"log/slog"
 	"mime/multipart"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
 
+	"golang.org/x/exp/slog"
+
 	"github.com/csaf-poc/csaf_distribution/v3/internal/misc"
 	"github.com/csaf-poc/csaf_distribution/v3/util"
 )
@@ -57,7 +58,10 @@ type forwarder struct {
 
 // newForwarder creates a new forwarder.
 func newForwarder(cfg *config) *forwarder {
-	queue := max(1, cfg.ForwardQueue)
+	queue := cfg.ForwardQueue
+	if queue < 1 {
+		queue = 1
+	}
 	return &forwarder{
 		cfg:  cfg,
 		cmds: make(chan func(*forwarder), queue),