feat: add `event_timestamp` to all trigger event data objects

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (2362b9c) to head (03eb868).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #109 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 36 37 +1 Lines 1095 1150 +55 Branches 17 17 ========================================= + Hits 1095 1150 +55 ```

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