gha: use latest Visual Studio compiler #13174
Merged
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The CI for MSVC/clang-cl have started failing, because as per actions/runner-images#9701, GitHub has removed all VC++ toolsets except the latest one (for now it's 14.39). That's why the version 14.38 was not found. (see also ilammy/msvc-dev-cmd#80).
If we don't hard-code a version, then the action will default to the latest toolset. I haven't found a way to (at least) log the version that's used. I haven't looked at installing a specific version. I think we're fine defaulting to the latest available version.