security/py-fail2ban: Import fix for upsteam issue gh-3370

Fix dovecot jail causes 100% CPU usage (upstream GH issue 3370).

Reported by:	Michael Grimm <trashcan@ellael.org>
		Roger Marquis <marquis@roble.com>
Obtained from:	https://github.com/fail2ban/fail2ban/issues/3370
		Upstream commit ca2b94c5
MFH		2022Q4