LibKeyboard: Replace uses of JsonObject::get_deprecated()/get_ptr()

Author: https://github.com/AtkinsSJ
Commit: 6ee68d6e45
Pull-request: https://github.com/SerenityOS/serenity/pull/17081
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Libraries/LibKeyboard/CharacterMapFile.cpp

@@ -63,7 +63,7 @@ Vector<u32> CharacterMapFile::read_map(JsonObject const& json, DeprecatedString
     Vector<u32> buffer;
     buffer.resize(CHAR_MAP_SIZE);
 
-    auto map_arr = json.get_deprecated(name).as_array();
+    auto map_arr = json.get_array(name).value();
     for (size_t i = 0; i < map_arr.size(); i++) {
         auto key_value = map_arr.at(i).as_string();
         if (key_value.length() == 0) {