GithubPRPlanPlugin fails to create GitHub comment on large plan

[vincentclee]

ERROR: Creating GitHub comment failed: HTTP/1.1 100 Continue

HTTP/1.1 422 Unprocessable Entity
Server: GitHub.com
Date: Wed, 08 Feb 2023 14:34:03 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 340
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X-GitHub-Enterprise-Version: 3.5.9
X-GitHub-Media-Type: github.v3; format=json
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Access-Control-Allow-Origin: *
X-GitHub-Request-Id: NOFORN
Strict-Transport-Security: max-age=31536000; includeSubdomains
X-Frame-Options: deny
X-Content-Type-Options: nosniff
X-XSS-Protection: 0
Referrer-Policy: origin-when-cross-origin, strict-origin-when-cross-origin
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X-Runtime-Rack: 0.168552