Update net-contour nightly (#13220)
Update net-contour nightly (#13220)

bumping knative.dev/net-contour 248a16a...bc5dc46:
  > bc5dc46 Update actions (# 801)
  > 5131ec5 Update community files (# 800)

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

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