Bumped Go version to Go 1.21. Using log/slog instead of golang.org/x/exp/slog

internal/options/log.go

@@ -9,9 +9,8 @@
 package options
 
 import (
+	"log/slog"
 	"strings"
-
-	"golang.org/x/exp/slog"
 )
 
 // LogLevel implements a helper type to be used in configurations.

internal/options/log_test.go

@@ -9,9 +9,8 @@
 package options
 
 import (
+	"log/slog"
 	"testing"
-
-	"golang.org/x/exp/slog"
 )
 
 func TestMarshalFlag(t *testing.T) {

internal/options/options.go

@@ -12,14 +12,14 @@ package options
 import (
 	"fmt"
 	"log"
+	"log/slog"
 	"os"
 
+	"github.com/csaf-poc/csaf_distribution/v3/util"
+
 	"github.com/BurntSushi/toml"
 	"github.com/jessevdk/go-flags"
 	"github.com/mitchellh/go-homedir"
-
-	"github.com/csaf-poc/csaf_distribution/v3/util"
-	"golang.org/x/exp/slog"
 )
 
 // Parser helps parsing command line arguments and loading