Upgrade testing deps #1104

Job	Run time
Run tests (3.8)	1m 58s
Run tests (3.9)	2m 4s
Run tests with different pydantic versions	3m 25s
Run tests with coverage	2m 59s
Run tests (3.10)	2m 0s
Run linters (flake8)	1m 45s
Run tests (3.11)	1m 59s
Run linters (pydocstyle)	1m 45s
Run tests (3.12)	2m 3s
Run tests on legacy versions (3.7)	2m 15s
Run linters (mypy)	1m 51s
Run tests (3.13)	2m 16s
Run linters (pylint)	1m 53s
	28m 13s

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