/etc/logcheck/ignore.d.workstation/francine is in logcheck-database 1.3.14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ francine: \(pam_unix\) session (opened|closed) for user [a-z]+( by LOGIN\(uid=0\))?$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ francine: pam_unix\(francine:session\): session (opened|closed) for user [a-z]+( by LOGIN\(uid=0\))?$
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