Update eventing nightly (#1447)

bumping knative.dev/eventing 1aa3407...ff37e4e:
  > ff37e4e Sequence reconciler reads and watch the config-features configmap (# 8124)
  > a9abf3c [main] Upgrade to latest dependencies (# 8119)
  > d56d9ea [main] Update community files (# 8120)

Signed-off-by: Knative Automation <automation@knative.team>