argument types in textinput are now compatible

dependencies/subprojects/animationwindow/src/widgets/TextInput.cpp

 #include "widgets/TextInput.h"
 
 void TDT4102::TextInput::update(nk_context *context) {
-    nk_edit_string_zero_terminated(context, NK_EDIT_SELECTABLE | NK_EDIT_ALWAYS_INSERT_MODE | NK_EDIT_BOX | NK_EDIT_SIMPLE, contents.data(), internal::TEXT_INPUT_CHARACTER_LIMIT, nk_filter_ascii);
+    nk_edit_string_zero_terminated(context, NK_EDIT_SELECTABLE | NK_EDIT_ALWAYS_INSERT_MODE | NK_EDIT_BOX | NK_EDIT_SIMPLE, const_cast<char*>(contents.data()), internal::TEXT_INPUT_CHARACTER_LIMIT, nk_filter_ascii);
     
     // Detect whether any editing of the string has occurred
     // Nuklear only reports whether the text box has lost focus