Fix correctly check can bind to privileged ports
https://github.com/AdguardTeam/AdGuardHome/pull/4728

---
diff --git a/internal/aghnet/net_linux.go b/internal/aghnet/net_linux.go
index 0c0784c6..00c5997a 100644
--- a/internal/aghnet/net_linux.go
+++ b/internal/aghnet/net_linux.go
@@ -23,11 +23,11 @@ const dhcpcdConf = "etc/dhcpcd.conf"

 func canBindPrivilegedPorts() (can bool, err error) {
 	res, err := unix.PrctlRetInt(
-		unix.PR_CAP_AMBIENT,
-		unix.PR_CAP_AMBIENT_IS_SET,
+		unix.PR_CAPBSET_READ,
 		unix.CAP_NET_BIND_SERVICE,
 		0,
 		0,
+		0,
 	)
 	if err != nil {
 		if errors.Is(err, unix.EINVAL) {