/etc/logcheck/ignore.d.workstation/bonobo 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 2 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ bonobo-activation-server \([[:alnum:]-]+\): iid OAFIID:BrokenNoType:[0-9]+ has a NULL type$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ bonobo-activation-server \([[:alnum:]-]+\): invalid character '.' in iid 'OAFIID:[^[:space:]]+OAFIID_ContainsBadChars'$
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