More elaborate label check for when a changelog need to be added or not or automated generation of the changelog

[Pierre-Sassoulas]

Current problem

For 2.14 we're only checking the absence of the "skip news 🔇" label.

Desired solution

There's some label that will rarely need to be documented though :
"documentation", "dependency", "primer" and "maintenance" should be exempted... except if they've been added to the current milestone. We need to handle the case when another label was applied. This can wait for after 2.14.0 release. Maybe "skip news 🔇" is good enough indefinitely. We'd have to see how well it hold up with @DudeNr33 proposition to automatically generate the release notes too.

Additional context

#6632 (comment)
#6772 (review)
#6688 (comment)
#6688 (comment)

[Pierre-Sassoulas]

Closing as a maintainer deciding on a case by case basis using the skip-news label is good enough and even simpler so better.