Bump version to 4.16.1.dev0 (#776) #2893

Job	Run time
Run tests (3.11.0)	24s
Run tests (3.10.4)	25s
Run tests (3.12)	16s
Run tests (3.12.0)	20s
Run tests (3.9)	18s
Run tests (3.13.0)	24s
Run tests (3.11)	12s
Run tests (pypy3.11)	35s
Run tests (pypy3.10)	33s
Run tests (3.9.12)	21s
Run tests (pypy3.9)	27s
Run tests (3.14)	22s
Run tests (3.10)	13s
Run tests (3.13)	18s
Build docs	12s
Create an issue if daily tests failed	-1s
	5m 19s

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