Add missing cstdint include for GCC 13

[alexfikl]

Without this include it gives an error on install

segyio-1.9.11/python/segyio/segyio.cpp:1462:30: error: ‘uint16_t’ is not a member of ‘std’; did you mean ‘wint_t’?
1462 |             value = int(std::uint16_t(value));