Update dependencies

vendor/tailscale.com/util/osuser/group_ids.go

@@ -0,0 +1,54 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package osuser
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"os/user"
+	"runtime"
+	"strings"
+	"time"
+
+	"tailscale.com/version/distro"
+)
+
+// GetGroupIds returns the list of group IDs that the user is a member of, or
+// an error. It will first try to use the 'id' command to get the group IDs,
+// and if that fails, it will fall back to the user.GroupIds method.
+func GetGroupIds(user *user.User) ([]string, error) {
+	if runtime.GOOS != "linux" {
+		return user.GroupIds()
+	}
+
+	if distro.Get() == distro.Gokrazy {
+		// Gokrazy is a single-user appliance with ~no userspace.
+		// There aren't users to look up (no /etc/passwd, etc)
+		// so rather than fail below, just hardcode root.
+		// TODO(bradfitz): fix os/user upstream instead?
+		return []string{"0"}, nil
+	}
+
+	if ids, err := getGroupIdsWithId(user.Username); err == nil {
+		return ids, nil
+	}
+	return user.GroupIds()
+}
+
+func getGroupIdsWithId(usernameOrUID string) ([]string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "id", "-Gz", usernameOrUID)
+	out, err := cmd.Output()
+	if err != nil {
+		return nil, fmt.Errorf("running 'id' command: %w", err)
+	}
+	return parseGroupIds(out), nil
+}
+
+func parseGroupIds(cmdOutput []byte) []string {
+	return strings.Split(strings.Trim(string(cmdOutput), "\n\x00"), "\x00")
+}