Update validate bag activity

[djjuhasz]

• Remove unused cfg field
• Add a no-op bag validator for testing purposes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.32%. Comparing base (227c23f) to head (95aac99).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #23 +/- ## ========================================== + Coverage 82.05% 82.32% +0.27% ========================================== Files 7 8 +1 Lines 195 198 +3 ========================================== + Hits 160 163 +3 Misses 19 19 Partials 16 16 ```

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