Update package.json for tree-sitter 0.22

[jamesaoverton]

An update to tree-sitter since 0.21 requires some change to package.json, which broke the Nanobot build: https://github.com/ontodev/nanobot.rs/actions/runs/8250590447/job/22565584191#step:3:123. The immediate solution was to pin tree-sitter to 0.21. The better solution is to update the package.json. I couldn't find a clear document about what has to change, unfortunately.