Merge bitcoin-core/secp256k1#1401: ci, gha: Run all MSVC tests on Win… #56

Job	Run time
SageMath prover	57s
x64 (MSVC): Windows (VS 2022, shared)	7m 53s
x64 (MSVC): Windows (VS 2022, static)	6m 20s
x64 (MSVC): Windows (VS 2022, int128_struct)	7m 36s
x64 (MSVC): Windows (VS 2022, int128_struct with __(u)mulh)	8m 11s
x86 (MSVC): Windows (VS 2022)	11m 30s
x86_64: macOS Ventura (int64, yes, yes, yes, yes)	4m 36s
x86_64: macOS Ventura (int64, yes, yes, yes, yes, gcc)	5m 11s
x86_64: macOS Ventura (int128_struct, 2, 4)	3m 2s
x86_64: macOS Ventura (int128, yes, yes, yes)	3m 12s
x86_64: macOS Ventura (int128, yes, yes)	3m 0s
x86_64: macOS Ventura (int128, yes, yes, yes, yes, gcc)	3m 42s
x86_64: macOS Ventura (int128, yes, yes, yes, yes, -DVERIFY)	4m 11s
x86_64: macOS Ventura (distcheck)	3m 42s
x64 (MSVC): C++ (public headers)	29s
	1h 13m 32s

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