libcifpp-5.0.8 fails to build with gcc-13

[pacho2]

As reported downstream at https://bugs.gentoo.org/897978 it fails with the following error, probably due to a missing include:

      |                           ^~~~~~~
/var/tmp/portage/sci-libs/libcifpp-5.0.8/work/libcifpp-5.0.8/include/cif++/text.hpp:41:1: note: uint8_t is defined in header <cstdint>; did you forget to #include <cstdint>?
   40 | #include <experimental/type_traits>
  +++ |+#include <cstdint>
   41 | #else
/var/tmp/portage/sci-libs/libcifpp-5.0.8/work/libcifpp-5.0.8/include/cif++/text.hpp: In function char cif::tolower(int):
/var/tmp/portage/sci-libs/libcifpp-5.0.8/work/libcifpp-5.0.8/include/cif++/text.hpp:199:34: error: kCharToLowerMap was not declared in this scope
  199 |         return static_cast<char>(kCharToLowerMap[static_cast<uint8_t>(ch)]);
      |                                  ^~~~~~~~~~~~~~~

Thanks for your help

[mhekkel]

fixed