Describe the enhancement requested

Update fast_float version to 3.10.1.
after 3.10.1 they started using c++ 20 and it cause a lot of build errors. In reality - need in parse_number.h

#ifdef FASTFLOAT_ALLOWS_LEADING_PLUS // disabled by default
  if (*first == UC('+')) {
      ++first;
  }

for parsing Infinity values with + sign