Add CHANGES entry

5036.	[bug]		Prevent dig from hanging indefinitely when no
			lookup-specific nameservers are provided and no
			acceptable nameservers are found in /etc/resolv.conf.
			[GL #433]
26 jobs for 433-skip-lookup-when-no-acceptable-nameservers-are-found in 8 minutes and 41 seconds (queued for 7 seconds)