[External] : Disable copilot on the repo

[Thiago Milczarek Sayão]

Hi,

If the committer has Copilot, it will automatically perform reviews by
default, which can be a bit annoying.

I believe this can be disabled at the repository level:
https://github.com/openjdk/jfx/settings/copilot/coding_agent

-- Thiago.