chore(libpng): fix warning

[FASTSHIFT]

Description of the feature or fix

lvgl/lvgl/src/libs/libpng/../../../lvgl.h:30,
                 from lvgl/lvgl/src/libs/libpng/lv_libpng.c:9:
lvgl/lvgl/src/libs/libpng/lv_libpng.c: In function 'decode_png_file':
lvgl/lvgl/src/libs/libpng/lv_libpng.c:270:22: warning: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'png_uint_32' {aka 'unsigned int'} [-Wformat=]
  270 |         LV_LOG_ERROR("png draw buff alloc %" LV_PRIu32 " failed: %s", PNG_IMAGE_SIZE(image), filename);
      |                      ^~~~~~~~~~~~~~~~~~~~~~~
lvgl/lvgl/src/libs/libpng/../../../src/misc/lv_log.h:124:99: note: in definition of macro 'LV_LOG_ERROR'
  124 | #    define LV_LOG_ERROR(...) _lv_log_add(LV_LOG_LEVEL_ERROR, LV_LOG_FILE, LV_LOG_LINE, __func__, __VA_ARGS__)
      |                                                                                                   ^~~~~~~~~~~

Notes

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