run forced --dns-updown without --script-security

run forced --dns-updown without --script-security

Due to a shortcut in the `--dns-updown force' implementation, running the
default dns-updown script required `--script-security 2'. This makes the
forced default script run without --script-security set.

Change-Id: I55940b78e35f0e3d74aa6cba14378afed97a444e
Signed-off-by: Heiko Hund <heiko@ist.eigentlich.net>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20250626093006.24789-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg31994.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>