Update net-kourier nightly (#12843)
Update net-kourier nightly (#12843)

bumping knative.dev/net-kourier bfd11dd...779d6af:
  > 779d6af Set `80` port if k8s service omits the port (# 797)
  > 9b92d49 Update actions (# 823)
  > 1902ccc Update community files (# 822)
  > 1ab7e11 Introduce `kourier.knative.dev/disable-http2` annotation to disable HTTP2 envoy cluster configuration (# 804)

Signed-off-by: Knative Automation <f415700d4d0ce1c81810fe7553e3eea2bed16231@knative.team>
knative/serving,knative/serving