Move CI to "ubuntu-latest" #1896

Job	Run time
Lint	7s
Run tests (3.8)	5s
Run tests (3.8.0)	4s
Run tests (3.9)	8s
Run tests (3.9.0)	6s
Run tests (3.10)	6s
Run tests (3.10.0)	7s
Run tests (3.11)	6s
Run tests (3.11.0)	6s
Run tests (3.12)	6s
Run tests (3.12.0)	7s
Run tests (3.13)	6s
Run tests (3.13.0)	5s
Run tests (pypy3.8)	9s
Run tests (pypy3.9)	13s
Run tests (pypy3.10)	12s
Create an issue if daily tests failed	0s
	1m 53s

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