email: fix type mismatch
- FIX Fixes 'send_email' to expect an 'EmailMessage' object from the 'forge_email' method rather than a string-like object. (closes #3076)
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Signed-off-by: Dan Michael O. Heggø <danmichaelo@gmail.com>