Bumped web-tree-sitter to v0.19.4 and added v0.4.0 of
tree-sitter-devicetree, which had to be rebuilt to work in v0.19.x
https://github.com/joelspadin/tree-sitter-devicetree/releases/tag/v0.4.0
Changed how we patch web-tree-sitter to correctly load tree-sitter.wasm
to work with the latest version of Docusaurus. Including a copy of
tree-sitter.wasm as a static resource is no longer needed.
Peter Johanson