MFV: Import blocklist 2025-04-28 (8aa81bf)

Merge commit '70f30afd4e9af5a51ee324d97e4d8c5f2124ec15'

Breaking changes:

- Upstream commit 24932b6 ("blocklistd: log the conf file line number
with ba

MFV: Import blocklist 2025-04-28 (8aa81bf)

Merge commit '70f30afd4e9af5a51ee324d97e4d8c5f2124ec15'

Breaking changes:

- Upstream commit 24932b6 ("blocklistd: log the conf file line number
with bad protocol errors") breaks backward database compatibility.
An error will be displayed:
Key size mismatch 296 != 288
A new and compatible database, with the new name, will be created when the
service starts (committed separately).

- Upstream commit ddf6d71 ("implement BLOCKLIST_BAD_USER as a
"one-count" failure") introduced BLOCKLIST_BAD_USER with a one-count
failure mechanism. BLOCKLIST_AUTH_FAIL was implemented with a
two-count failure mechanism. Since we utilize BLOCKLIST_AUTH_FAIL, the
number of failed attempts now doubles towards the maximum limit
(nfails). This commit will be reverted separately.

Changes:

https://github.com/zoulasc/blocklist/compare/7093cd9...8aa81bf

Approved by: emaste (mentor)
MFC after: 2 days
Differential Revision: https://reviews.freebsd.org/D52869

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