duo_unix: use Homebrew's openssl
duo_unix: sandbox headers

duo_unix installs a pkgconfig file so moving the header directory should
be safe.

Closes #32510.
Add Formula for aptly 0.7.1

Summary:
Add Formula for aptly 0.7.1. Aptly is a debian apt repository package manager.

Test Plan:
brew install aptly
aptly version
brew uninstall aptly
aptly: add 0.7.1 bottle.