This change upgrades to the latest Chromium Zlib, fixes bugs in redbean,
and introduces better support for reverse proxies like Cloudflare. This
change improves the security of redbean and it's recommended that users
upgrade to the release that'll follow. This change also updates the docs
to clarify how to use the security tools redbean provides e.g. pledge(),
unveil(), and the MODE=asan builds which improve memory safety.