Improve event filtering

[cortadocodes]

Contents (#673)

IMPORTANT: There are 2 breaking changes.

New features

• Add dictionary_product utility function

Enhancements

• 💥 BREAKING CHANGE: Disable event validation in EventReplayer by default
• 💥 BREAKING CHANGE: Enable filtering by multiple event kinds in get_events
• Enable excluding multiple event kinds in get_events
• Use all non-question events for question redelivery check in flask app
• Add ability to skip handling logs containing certain text in AbstractEventHandler and subclasses
• Return outside of ThreadPoolExecutor context managers

---

Upgrade instructions

💥 Disable event validation in `EventReplayer` by default

Set `validate_events=True` in the `EventReplayer` constructor to retain the previous behaviour.

💥 Enable filtering by multiple event kinds in `get_events`

To filter by one event kind as before, use `kinds=[event_kind]` instead of `kind=event_kind`.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.73684% with 2 lines in your changes missing coverage. Please review.

Project coverage is 94.49%. Comparing base (9092646) to head (aacefd6). Report is 9 commits behind head on main.

Files	Patch %	Lines
octue/cloud/events/handler.py	66.66%	1 Missing :warning:
octue/cloud/pub_sub/bigquery.py	94.44%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #673 +/- ## ========================================== - Coverage 94.50% 94.49% -0.01% ========================================== Files 83 83 Lines 3547 3577 +30 ========================================== + Hits 3352 3380 +28 - Misses 195 197 +2 ```

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