Scala Steward error when GitHub PR description is too big

gistfile1.txt

  2024-11-12 14:52:18,736 ERROR Steward guardian/my-repo failed
  org.scalasteward.core.util.UnexpectedResponse: uri: https://api.github.com/repos/guardian/my-repo/pulls
  method: POST
  status: 422 Unprocessable Entity
  headers:
    access-control-allow-origin: *
    access-control-expose-headers: ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used, X-RateLimit-Resource, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, X-GitHub-SSO, X-GitHub-Request-Id, Deprecation, Sunset
    content-length: 253
    content-security-policy: default-src 'none'
    content-type: application/json; charset=utf-8
    date: Tue, 12 Nov 2024 14:52:18 GMT
    referrer-policy: origin-when-cross-origin, strict-origin-when-cross-origin
    server: github.com
    strict-transport-security: max-age=31536000; includeSubdomains; preload
    vary: Accept-Encoding, Accept, X-Requested-With
    x-accepted-github-permissions: pull_requests=write
    x-content-type-options: nosniff
    x-frame-options: deny
    x-github-api-version-selected: 2022-11-28
    x-github-media-type: github.v3
    x-github-request-id: FFC0:18113E:14F235D:292209D:67336BA1
    x-ratelimit-limit: 15000
    x-ratelimit-remaining: 14992
    x-ratelimit-reset: 1731425577
    x-ratelimit-resource: core
    x-ratelimit-used: 8
    x-xss-protection: 0
  body: {"message":"Validation Failed","errors":[{"resource":"Issue","code":"custom","field":"body","message":"body is too long (maximum is 65536 characters)"}],"documentation_url":"https://docs.github.com/rest/pulls/pulls#create-a-pull-request","status":"422"}