mail/exim: update 4.96.2 -> 4.97
Notable changes:
- The internal (but exposed in logs, Received: headers and Message-ID: headers) identifier used for messages is longer than in the previous release
PR: 274909
Changes: https://lists.exim.org/lurker/message/20231104.135832.37148bbd.en.html
Reported-by: doctor@doctor.nl2k.ab.ca
Approved-by: fluffy (maintainer)
Reviewed-by: Igor Zabelin <igorz@yandex.ru>