Update net-contour nightly (#13482)
Update net-contour nightly (#13482)

bumping knative.dev/net-contour 7c2760c...0c20c48:
  > 0c20c48 Update community files (# 832)

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

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