Improve async event retrieval workflow

[cortadocodes]

Contents (#647)

IMPORTANT: There are 2 breaking changes.

Enhancements

• 💥 BREAKING CHANGE: Return question UUID from Child.ask
• Deserialise manifests from events in get_event
• Raise error if no events found when calling get_events

Fixes

• Use correct base image for python3.11 dockerfile
• Return schema-compliant events and attributes from get_events

Operations

• Import missing APIs into terraform config
• Deploy version 0.5.0 of event handler cloud function and update event store schema
• Update actions/setup-python to version 5

Dependencies

• 💥 BREAKING CHANGE: Make db-dtypes and google-cloud-bigquery optional
• Upgrade gunicorn to avoid vulnerability
• Loosen numpy dependency

Testing

• Test retrieving results from real asynchronous question
• Run tests with python3.10 (python3.9 isn't available on macos-latest for arm64)

Other

• Add DOI badge to readme

---

Upgrade instructions

💥 Return question UUID from `Child.ask`

Instead of writing answer = Child.ask(...), write answer, question_uuid = Child.ask(...) (and the same for ChildEmulator)

💥 Make `db-dtypes` and `google-cloud-bigquery` optional

To keep using the get_events function, add the bigquery optional extra to your installation command e.g. poetry install -E bigquery.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 75.75758% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 94.62%. Comparing base (8eb0379) to head (330ea82).
Report is 1 commits behind head on main.

Files	Patch %	Lines
octue/cloud/pub_sub/bigquery.py	70.83%	7 Missing ⚠️
octue/resources/child.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #647      +/-   ##
==========================================
- Coverage   94.79%   94.62%   -0.18%     
==========================================
  Files          82       82              
  Lines        3535     3552      +17     
==========================================
+ Hits         3351     3361      +10     
- Misses        184      191       +7     

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