Move CI to "ubuntu-latest" #1891

Job	Run time
Lint	7s
Run tests (3.8)	15s
Run tests (3.8.0)	5s
Run tests (3.9)	13s
Run tests (3.9.0)	4s
Run tests (3.10)	5s
Run tests (3.10.0)	5s
Run tests (3.11)	9s
Run tests (3.11.0)	17s
Run tests (3.12)	6s
Run tests (3.12.0)	13s
Run tests (3.13)	7s
Run tests (3.13.0)	16s
Run tests (pypy3.8)	17s
Run tests (pypy3.9)	13s
Run tests (pypy3.10)	11s
Create an issue if daily tests failed	0s
	2m 43s

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