Task: Webhook returning XML

n8n workflow JSON:
{"meta":{"instanceId":"8c8c5237b8e37b006a7adce87f4369350c58e41f3ca9de16196d3197f69eabcd"},"nodes":[{"id":"302c87d4-2c92-40a0-9a77-cef4ddd7db6d","name":"XML","type":"n8n-nodes-base.xml","position":[840,440],"parameters":{"mode":"jsonToxml","options":{}},"typeVersion":1},{"id":"88ba5ee7-4788-452f-9d64-bf192fe90e5f","name":"Set","type":"n8n-nodes-base.set","position":[660,440],"parameters":{"values":{"number":[{"name":"number","value":1}],"string":[{"name":"string","value":"my text"}]},"options":{},"keepOnlySet":true},"typeVersion":1},{"id":"6cda9dc3-0fdd-4f3a-aecf-0ff0efd28c33","name":"Respond to Webhook","type":"n8n-nodes-base.respondToWebhook","position":[1020,440],"parameters":{"options":{"responseHeaders":{"entries":[{"name":"content-type","value":"application/xml"}]}},"respondWith":"text","responseBody":"={{ $json.data }}"},"typeVersion":1},{"id":"94644433-fb9b-4532-81d2-d9673eb6e15e","name":"Webhook","type":"n8n-nodes-base.webhook","position":[480,440],"webhookId":"89fb6783-adc5-4cbc-bacc-dbd7b85df403","parameters":{"path":"test","options":{},"responseMode":"responseNode"},"typeVersion":1}],"connections":{"Set":{"main":[[{"node":"XML","type":"main","index":0}]]},"XML":{"main":[[{"node":"Respond to Webhook","type":"main","index":0}]]},"Webhook":{"main":[[{"node":"Set","type":"main","index":0}]]}}}