Update mypy to 2.0.0 (#15716) #15174

Job	Run time
stubtest: stdlib (ubuntu-latest, 3.15)	47s
stubtest: stdlib (ubuntu-latest, 3.14)	45s
stubtest: stdlib (macos-latest, 3.15)	53s
stubtest: stdlib (macos-latest, 3.13)	38s
stubtest: stdlib (windows-latest, 3.11)	1m 33s
stubtest: stdlib (windows-latest, 3.15)	2m 23s
stubtest: stdlib (macos-latest, 3.10)	1m 34s
stubtest: stdlib (ubuntu-latest, 3.11)	40s
stubtest: stdlib (windows-latest, 3.14)	1m 19s
stubtest: stdlib (macos-latest, 3.14)	38s
stubtest: stdlib (windows-latest, 3.13)	1m 16s
stubtest: stdlib (windows-latest, 3.12)	2m 14s
stubtest: stdlib (macos-latest, 3.12)	41s
stubtest: stdlib (macos-latest, 3.11)	47s
stubtest: stdlib (ubuntu-latest, 3.10)	49s
stubtest: stdlib (ubuntu-latest, 3.13)	35s
stubtest: stdlib (ubuntu-latest, 3.12)	34s
	18m 6s

Provide feedback