Discard non-intersting PR events
Discard non-intersting PR events

Only the PR which are opened, reopened, closed or syncrhonised are interesting
for Datakit (for now).

Signed-off-by: Thomas Gazagnaire <5f50a84c1fa3bcff146405017f36aec1a10a9e38@gazagnaire.org>

docker/datakit,docker/datakit,docker/datakit