Fix vswhere for Build Tools #727

Job	Run time
ubuntu-20.04 - C++ Benchmark	2m 3s
C++ Lint	6m 16s
Windows MSVC 17 x64 - C++ Benchmark	4m 6s
ubuntu-20.04 - test run	29m 5s
Windows MSVC 17 x64 - test run	35m 45s
macos-12 - C++ Benchmark	2m 3s
Windows MSVC 17 x86 - test run	37m 22s
macos-12 - test run	31m 27s
Windows MSVC 16 x64 - test run	38m 38s
ubuntu-20.04 - with Clang compiler - test run	30m 24s
ubuntu-20.04 - without libclang completer - test run	26m 47s
	4h 3m 56s

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