Test mails for Decryption Oracle based on replying to PGP or S/MIME.
Summary:
In order to make sure we never add a Decryption Oracle add test mails to
TemplateParser.
BUG: 404698
Reviewers: KDE PIM, aacid, dfaure
Subscribers: kde-pim
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D20757