Release Modoboa 2.8.1

Modoboa 2.8.1 is now available!

We’re excited to announce the release of Modoboa 2.8.1, packed with improvements, security updates

🛠️ Bug Fixes & Improvements

• Use domain from headers if not available within an auth result. by @tonioo in #3853
• Various security fixes by @tonioo in #3997