According to [1], the template parameter must be cv-unqualified and one
of unsigned short, unsigned int, unsigned long, or unsigned long long.
Should fix the following MSVC error:
error: static assertion failed due to requirement
'_Is_any_of_v<unsigned char, unsigned short, unsigned int, unsigned
long, unsigned long long>': invalid template argument for
independent_bits_engine: N4659
[1] https://en.cppreference.com/w/cpp/numeric/random/independent_bits_engine
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