Bigger Sturdy Backpack

Only tested on 1.20.7 I'm not sure if it works on newer versions or not. Feel free to try and let me know.

<span style="background-color: #ffffff; --darkreader-inline-bgcolor: var(--darkreader-background-7e8c8d, #585e61); color: #e74c3c; --darkreader-inline-color: var(--darkreader-text-e74c3c, #c95448);" data-darkreader-inline-bgcolor="" data-darkreader-inline-color="">Must create new bags, existing bags will not be upgraded from default 8 slots. May or may not break current bags additional testing is required to confirm.
Remove any items from current sturdy backpacks before installing the mod to be safe. :)</span>