You can use SQLite Browser to edit your file-based SQLite instance to reset the password
Set the user password to:
SHA-256:E098D0FF01DCD46B:2710:EDB5BB5AE2F88C7558784CD8F056ADEF3B4282951C503F8B04A0EBE94B099222
Which is equivalent to: letmein
If you have concerns, feel free to get in touch and we can assist you
Please make a backup of your database prior to trying this
Below steps are for installing SQLite Database Browser
Download Links
Website
http://sqlitebrowser.org/
SQL Lite Portable Version
https://github.com/sqlitebrowser/sqlitebrowser/releases/download/v3.10.1/SQLiteDatabaseBrowserPortable_3.10.1_English.paf.exe