Fix tiff deprecation warnings

[springmeyer]

This addresses the deprecation warnings coming from the latest tiff releases.

I saw them with libtiff/4.4.0_1 from homebrew:

./projects/selene/selene/img_io/tiff/Write.cpp:41:53: warning: 'uint32' is deprecated [-Wdeprecated-declarations]
  set_field<std::uint32_t>(tif, TIFFTAG_IMAGEDEPTH, uint32{1});
                                                    ^
/opt/homebrew/include/tiff.h:84:45: note: 'uint32' has been explicitly marked deprecated here
typedef TIFF_MSC_DEPRECATED uint32_t uint32 TIFF_GCC_DEPRECATED;
                                            ^

/cc @kmhofmann