Handle rails 6.1 `update_attributes` deprecation
Handle rails 6.1 `update_attributes` deprecation

Fix the deprecation, that will break in rails 6.1
``
DEPRECATION WARNING: update_attributes! is deprecated and will be removed from Rails 6.1 (please, use update! instead) (called from process_row at db/seeds/fee_types/csv_seeder.rb:68)
```

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