Ghostwood Pale Oak Planks

Updated to Minecraft 1.21.7

I hadn't realised 1.21.7 came with new pack formats. There was nothing wrong with the previous version of this pack, but now this one won't show the outdated warning.

Added texture for Blocks for Builders' Pale Oak Bookshelf

If you don't have Blocks for Builders, don't worry! The pack will still work and this texture will just be ignored.