Content updates from Page Editor

[github-actions[bot]]

The content has changed in the Page Editor. Please review, merge, and deploy.

[rmccue]

(This is me!) One newer update needed here (replaced static 43% with [market_share]).

[rmccue]

Huzzah!

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This is a major update to the Security page. The current (pre-this-PR) content of the Security page is a HTML copy of the security whitepaper, and isn't particularly useful.

As an outcome of the security team meeting at WCEU last year, we agreed to update this page to make it more useful as a go-to reference for WP's security. With this PR, it now looks like this:

This covers our key areas of note for security concerns; namely, how to report vulnerabilities in core, plugins, and themes; and, how the security team and process works generally.

The content has been reviewed by various stakeholders including the security team and has been approved by Josepha. I believe I've covered all the bases in what's necessary to get this published, but as I haven't touched .org's content previously, please do let me know if I missed anything.

• [x] This content is published to https://wordpress.org/about/security/ in the CMS
• [x] Content has been reviewed by the security team
• [x] Content has been reviewed and approved by @josephahaden

cc @ryelle For your approval, I believe :)

[ryelle]

The latest update just adds extra space between the columns, no content changes.

[ryelle]

This has been deployed, the page is updated: https://wordpress.org/about/security/

[rmccue]

Thanks for the help @ryelle!