test

Bump mypy from 1.20.2 to 2.1.0 #2604

Job	Run time
ubuntu-latest - 3.11	9m 13s
ubuntu-latest - 3.14 free-threading	9m 39s
ubuntu-latest - 3.14	8m 45s
ubuntu-latest - 3.10	8m 1s
ubuntu-latest - 3.13	8m 39s
ubuntu-latest - 3.15-dev free-threading	11m 5s
ubuntu-24.04-arm - 3.10	6m 53s
ubuntu-24.04-arm - 3.12	8m 1s
windows-latest - 3.14	13m 0s
ubuntu-24.04-arm - 3.13	7m 55s
ubuntu-24.04-arm - 3.11	7m 51s
ubuntu-24.04-arm - 3.14 free-threading	7m 47s
ubuntu-latest - pypy-3.11	14m 33s
ubuntu-latest - 3.15-dev	9m 51s
macos-latest - 3.14	7m 22s
ubuntu-latest - 3.12	9m 7s
ubuntu-24.04-arm - 3.14	7m 44s
	2h 35m 26s

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