Add scanignore to allow publicsuffixes plaintext file from publicsuffix.org

Add scanignore in com.kunzisoft.keepass.libre.yml to allow the plain text file app/src/main/assets/publicsuffixes.

The file at app/src/main/assets/publicsuffixes is a version of the Public Suffix List that has been sorted and stripped of all comments. It is identified as a binary files because it contains two 4-byte length fields, one right at the beginning, but is otherwise plaintext.

Issues: https://github.com/Kunzisoft/KeePassDX/issues/773

File: https://github.com/Kunzisoft/KeePassDX/blob/master/app/src/main/assets/publicsuffixes

Same as dev.msfjarvis.aps.yml