Skip Codecov upload step on forks (#731) #2656

Job	Run time
Run tests (3.10.4)	20s
Run tests (3.9)	20s
Run tests (3.13)	17s
Run tests (3.11.0)	19s
Run tests (3.10)	16s
Run tests (3.12)	15s
Run tests (3.11)	15s
Run tests (3.12.0)	22s
Run tests (3.9.12)	19s
Run tests (3.13.0)	19s
Run tests (3.14)	18s
Run tests (pypy3.9)	22s
Run tests (pypy3.10)	26s
Run tests (pypy3.11)	33s
Create an issue if daily tests failed	0s
	4m 41s

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