Add support for security.txt API

[Cyb3r-Jak3]

Description

Adds support for security.txt API
API Docs

Has your change been tested?

New tests added and all tests pass

Screenshots (if appropriate):

Types of changes

What sort of change does your code introduce/modify?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented in cloudflare/api-schemas
  and relies on stable APIs.

[github-actions]

changelog detected ✅

[jacobbednarz]

any reason why you can't use v3 or newer of the library? it already includes this endpoint.

[Cyb3r-Jak3]

Sorry, I added this because I didn't see it available in the latest v3 tag release.

[jacobbednarz]

if you can, let's use that instead so that we can move off v0 of the library where possible. also means you don't need to keep these in sync with the schemas.

[Cyb3r-Jak3]

It looks like it is only available via the next branch. Is the recommendation to use that branch?

[jacobbednarz]

either @next or @<sha> to avoid it moving. there will be releases coming once a few more things are ironed out.