go: use debug log level when checking C compiler option support (#17606)
go: use debug log level when checking C compiler option support (#17606)

Use `debug` log level when invoking the C compiler to be used for Cgo compilation to check whether it supports the option. Otherwise the task is logged at `info` level.
pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants