Notify NTFY allow adding Headers for example when calling CloudFlare

[gcstang]

Allow other headers to be added for example with Cloudflare using these headers

• CF-Access-Client-Id
• CF-Access-Client-Secret

[github-actions]

Please upgrade to the latest code and try again first. Maybe it's already fixed. acme.sh --upgrade If it's still not working, please provide the log with --debug 2, otherwise, nobody can help you.