Missing x86 binaries for new versions of LLVM on MacOS

[aminya]

The upstream doesn't provide binaries for x86 MacOS for the new versions of LLVM anymore.

setup-cpp/src/llvm/llvm_url.ts

Lines 88 to 95 in 8c72d55

	// missing x86_64
	// TODO add arm64 support
	"15.0.4",
	"15.0.5",
	"15.0.6",
	"16.0.0",
	"16.0.1",
	"16.0.2",