use dateutil to parse date strings

[EricOuma]

Resolves # (issue)

Proposed changes

Django's date parser wasn't parsing simple dates like '08 December 2023'

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
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Checklist

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