413 Payload is too large

[asilenkov]

knative-serving = v1.19.4
net-kourier = v1.19.4
Get
"type":"about:blank","title":"Payload Too Large","status":413,"detail":"Maximum upload size exceeded",
trying to upload >1mb

Tried

• modifying kourier-bootstrap adding filter
• knative-kourier cm
  no luck

What is the correct way to increase body_size?

[dprotaso]

cc @dsimansk