Interference between mailing list and GH notifications

[Roman Kennke]

Hi there,

Today I noticed a weird interference between Lilliput mailing list and 
GH notifications.

It started when Dave Dice posted something to lilliput-dev:

https://mail.openjdk.java.net/pipermail/lilliput-dev/2021-November/000196.html

It seems like Skara/GH thought this somehow belongs to Lilliput PR27, 
and attached the email to its comments:

https://github.com/openjdk/lilliput/pull/27#issuecomment-963500322

Since then, any reply to this original email got copied into PR27, even 
if I *excluded* all GH email addresses from CC, and only put in 
lilliput-dev.

Can you please check what is up there? Have I done a mistake in Lilliput 
configuration somehow? I haven't changed anything recently since initial 
project set-up, and I've never seen such behaviour before.

Thanks,
Roman