fix: serialize datetime objects as strings

[Ian2012]

Description

This PR fixes an issue when serializing as JSON the course data where some attributes were dates cannot be encoded by default. We use the code from event-tracking to allow the serialization of datetime objects as JSON.

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Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
platform_plugin_aspects
__init__.py
platform_plugin_aspects/extensions
filters.py
platform_plugin_aspects/management/commands
load_test_tracking_events.py
monitor_load_test_tracking.py
platform_plugin_aspects/sinks
serializers.py					30, 32-35
Project Total

This report was generated by python-coverage-comment-action

[bmtcril]

I'd rather not bring in event-tracking and all of its sub-dependencies just for this one small class that has basically not changed in 11 yrs. I'd rather just copy it in, or use an altered version of the accepted SO answer with the addition of the very good UTC changes from event-tracking.

[bmtcril]

👍

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