/etc/logcheck/ignore.d.server/apcupsd is in logcheck-database 1.3.17.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | ^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ apcupsd\[[[:digit:]]+\]: UPS Self Test (switch to battery.|completed: Battery OK)$
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