/etc/logcheck/ignore.d.server/sudo is in logcheck-database 1.3.18.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sudo: pam_[[:alnum:]]+\(sudo:session\): session closed for user [[:alnum:]-]+$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sudo: pam_[[:alnum:]]+\(sudo:session\): session opened for user [[:alnum:]-]+ by ([[:alnum:]-]+)?\(uid=[0-9]+\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sudo:[[:space:]]+[_[:alnum:].-]+ : TTY=(unknown|(pts/|tty|vc/)[[:digit:]]+) ; PWD=[^;]+ ; USER=[._[:alnum:]-]+ ; COMMAND=(/(usr|etc|bin|sbin)/|sudoedit ).*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sudo:[[:space:]]+[_[:alnum:].-]+ : \(command continued\).*$
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