Tests

Fixes bug/feature in GitHub action upload-artifact that ignores any file that starts with a dot. #275

Job	Run time
Tests / Prepare Python/Django matrix	15s
Tests / Python 3.8 - Django 3.2.*	24s
Tests / Python 3.8 - Django 4.1.*	25s
Tests / Python 3.8 - Django 4.2.*	1s
Tests / Python 3.9 - Django 3.2.*	1s
Tests / Python 3.9 - Django 4.1.*	1s
Tests / Python 3.9 - Django 4.2.*	1s
Tests / Python 3.10 - Django 3.2.*	26s
Tests / Python 3.10 - Django 4.1.*	29s
Tests / Python 3.10 - Django 4.2.*	36s
Tests / Python 3.10 - Django 5.0.*	23s
Tests / Python 3.10 - Django 5.1.*	22s
Tests / Python 3.10 - Django main	32s
Tests / Python 3.11 - Django 3.2.*	32s
Tests / Python 3.11 - Django 4.1.*	33s
Tests / Python 3.11 - Django 4.2.*	33s
Tests / Python 3.11 - Django 5.0.*	35s
Tests / Python 3.11 - Django 5.1.*	35s
Tests / Python 3.11 - Django main	23s
Tests / Python 3.12 - Django 3.2.*	25s
Tests / Python 3.12 - Django 4.1.*	26s
Tests / Python 3.12 - Django 4.2.*	30s
Tests / Python 3.12 - Django 5.0.*	21s
Tests / Python 3.12 - Django 5.1.*	28s
Tests / Python 3.12 - Django main	29s
Tests / coverage	1s
	9m 47s

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