curl --request PATCH \
  --url https://registry.wp-content.io/themes/{slug}/versions/{version} \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '{
  "release_notes": "Release notes for this version\n_Markdown is accepted_."
}'

{
  "version": "1.0.1",
  "release_notes": "Release notes for this version\n_Markdown is accepted_.",
  "download_link": "https://wp-content-staging.s3.fr-par.scw.cloud/artifacts/themes/my-theme/my-theme-1.0.1-2f5fafc05b11f83c15a8b72ce15609c8.zip",
  "checksum": "2f5fafc05b11f83c15a8b72ce15609c8",
  "latest": true
}