Update the deptrac configuration file

[jakzal]

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 [WARNING] The format and default location of the depfile have changed.
           If you have already changed this, then you can ignore this warning. Otherwise please:
             * Update your depfile (see UPGRADE.md for details).
             * Rename the depfile to "deptrac.yaml", if you want it to load it automatically.
             * Use the --config-file option, if you want to load a specific file instead of using the argument.